Some strobes (and infrared strobe triggers) use high voltages in the trigger circuit. For mechanical cameras, this is fine  but many newer, electronically-driven cameras (especially electronic 35mm SLRs like the EOS or digicams  or for that matter, EOS digicams, like the 300D) can be damaged by excessive strobe voltages.

How much is too much? What voltage might my own strobe generate? This page tries to help answer those questions. It contains a table of strobe trigger voltages, a few measured by myself but most contributed by readers of this site. It also contains some information about specific camera makes and the strobes that light them.

Canon US has verified (to me, and here) that the Powershot G doesn't like voltages over 6V.

Similarly, Nikon has specified 12V for their speedlight circuits... (though reader Steve Francesoni called Nikon.uk to check, and their tech rep said that his N80 was good to 250V  so there may be more complexity to this story). I've heard some rumours that some Coolpix models have been restricted to 5V! (see below for more details)

Marco Fortin-Metzgen checked with Olympus Europe on his C4040  that digicam has a trigger voltage of 10V, so Olympus too recommends strobe triggering in the 3V to 6V range.

Pentax users may want to read this related story from Gene Poon.

Ron Alexander claims his Fuji is astonishingly tolerant of high voltages... interesting (This has since been verified by Rob Scrimgeour of the FujiGroup.net forum  their members got a message from Fuji also stating the 400V center pin limit).

(According to some opinions, high voltages can even endanger mechanical cameras, albeit after years of use)

The ISO 10330 specification ("Photography -- Synchronizers, ignition circuits and connectors for cameras and photoflash units -- Electrical characteristics and test methods," 1992) says that all ISO-compliant cameras should be able to accept trigger voltages up to 24V. Though a Canon engineer is the nominal head of the ISO workgroup, for some reason Canon continues to insist that their cameras tolerate no more than 6V (make that Canon USA  an email from Canon Canada says: "There is not a maximum voltage requirement for the hot shoe terminal on the PowerShot G1." Go fig!). For that reason I've tagged strobes that trigger at voltages between 6V and 24V as "your call." Depending upon who you ask  the camera or strobe manufacturers  those strobes are acceptable or they are not.

The ISO spec doesn't really seem to hold a lot of weight!

The following list is based on either manufacturer specs or direct measurements (To measure the trigger voltage of your own strobe, follow the instructions here). If you can add to this list, please post a message or mail me your numbers, along with a description of how you obtained them (measurement, from the web, from the manufacturer, etc). I may be slow in getting your data into the list (just check the journal), but I do follow-through eventually!  KB

If this site is helpful to you, Click Here to list it on PHOTOBLOGS.ORG and help share it with others

While I have every reason to believe the information presented here is correct, I cannot be held responsible for the voltages coming from your flash equipment. Prudence is the purpose of this web page.

Follow at your own risk.

Mfgr Model EOS Safe? Trigger Voltage

Achiever TZ250 Yes(?) A mere 0.5V (!), measured (with some due incredulity!) by Russ Kendall

Göran Samuelsson reported 8.5V on his test

115 A/S Your Call A mere 2V, reported by "KC"

but 10.6V from Paul Turton

TZ 250 Your Call 8.5V, also reported by "KC"

260AF Yes A mere 3V, measured by Jeremy Tan

(Note this is not the Achiever 260T)

DZ260 Yes A mere 3.4V, measured by Paul Achary

(Same as the Acheiver 260AF)

260T No 220V, reported by "KC" and

253V from Mike Marty

321AZ No 297.6V, measured by David Gonzalez

632LCD Yes ~4.7, measured by Tanguy Kervahut

Agfatronic 2A No 185V-210V, measured by Juha Kopsa

201B No 80.3V, measured by Oliver Karstens

240B No 238V reported by EJ Boeve

261CB No 64V reported by Stephan Kruisman

280VB No 50+V reported by Amders Gidenstam

383 CS Your Call 6.5V reported by Oliver Schrinner

401BCS No 212V, measured by Martin Stein

643CS Your Call 6.3V & 6.7V measured on two different strobes by Craig Schroeder

Albinar 90 MDT Yes (?) 3.2V, measured by Wirak Lim, but

without any luck using it with a G1

100 MDT-Twin Yes 3.02V, measured by Richard Moore

Argus Automatic 9138 No 270V, measured by Rich Grochowski

Armatar 90 MDT Your Call 10V, measured by Tony Bonanno

Ascor

Light CD2400 Your Call 14.5V from WDFlannery

Balcar Super A2400 No 202V & reverse polarity reported by Bakó Imre

Bauer E528 AB No 253V, measured by "Grigory" in Belarus

Blacks DZ 40 Your Call 8V, measured by Rob Thacker

TDZ 120 Yes 2.6V, measured by Paul Clements

DM360BT Yes 4V, measured by David Treble

Braun Hobby No 225V, from Göran Samuelsson

28 No 220V, measured by Ernst Albert

32M Yes 2.56-3.56V, measured by "laaarrd"

34 Your Call 11.7V, measured by Ted Coffey

F34 No 160.55V, measured by Alan Buckbee

38 M Logic Your Call 7.5V, measured by Panu L

280BVC Your Call 13.6V, measured by Jean Taillon

320BVC Your Call 6.7V, measured & reported by Lars Hanssen

VarioZoom 340 SCA Yes 4.0V-4.3V, depending on battery type, measured and reported by Kai Ingman

370BVC Your call 21.1V, measured by Hannu Martiskin

20.5V from Göran Samuelsson

380BVC Your call 11.6V, measured by Peter Savage

400M Logic Your call 7.6V measured by Harmut Gruenhagen

410VC Your call 21.4V measured by Stephan Bruckmann

420BVC Your Call 11.6V, measured by Jean Taillon

440VC Your call 16V measured by Ulrich Höxtermann

Britek AS-36 Yes 5.3V measured by Peter P

SP 250 Monolight Your Call 6.7V measured by "Everett"

Broncolor Pulso 4 Your call 6.5-10.8V depending on the charge, according to Leon Obers

one channel IR transmitter Your call 13.5V, per Leon Obers,

Fred Phillips reported just 3.2V



(White

Lightning) Paul Buff (WhiteLightning) Radio Remote 1

Transmitter Yes 4.84V reported by Bryce Turner

Remote RC-1 Your call (same part?) 9.23V, measured by Jan C. Doddy

UltraZap Yes 6V spec reported by Peter Timaratz

(though sync with G1 is dicey)

Ed White reported varying results, from 4.8V to 13.3V on his Ultra Zap 800, according to the power settings

Ultra 600 Your call 9.3-13.6V, measured by Bryce Turner on multiple units

Ultra 1200 Your call 10.02V, measured by Jan C. Doddy

10000 Your call 24.1V, per Toney Hall

Calumet

(Bowens) PS No 30V according to Bob Atkin'sEOS FAQ

Monolite 400 No 170V per Teemu Virtanen

Traveller No 15V (EOS FAQ)

Canon 220EX

380EX

420EX

550EX Yes All less than 6V (Per Canon and verified by Benny Khaw). These are the strobes specified by Canon for the Powershot

More info Here

ML-3 Yes 4.99V measured by Kevin Omura,

full power only  and wouldn't trigger on the D30

011A Your Call 16.9V measured by Derek Woodlands

AB56 Your Call 7.8V measured by Bharat Mistry

133A Your Call 6.1V per Gerardo Nieto

155a Your Call 8.2-8.7V measured by Bart Harrison

(6.04V reported by Kevin Omura)

166A Yes 4.33V per Kevin Omura

177A Your call 6.77V per Ed Hahn

188A Yes 4.1V per Gerardo Nieto

199a Yes 4.99V measured - Canon rated it 6V

200E Yes ~3.9V measured by Maarten Klap

200M Your Call 12.3V measured by Tony Williams

244T Yes 4.33-4.44V measured by Daniel Griswell

277T Yes 4.8V measured by Dan Karg

299T Yes 4.75V measured by Alec Hipwell

300EZ Yes

(See Note) 3.6V, measured by Eric Jones. Sadly, Canon's "EZ" and "EX" flash units use different TTL schemes. Despite the nearly-identical names, the "EZ" strobes (which use a system called "A-TTL") can only be used as full-power-manual strobes with pure E-TTL cameras like the G1/G2 or the D30.

300TL Yes 3.75V measured by Kevin Omura

(manual only)

420EZ Yes

(See Note) 4V, measured by Joe Filer,

4.71V with a Quantum battery per Kevin Omura. (See note for 300EZ above)

533g Yes? 4.95V measured by Pierre Hurtubise,

but it doesn't seem to fire...

Kevin Omura also reports G2 problems with this unit

577G Yes 4.7V measured by Kevin Omura,

and tested on a G2 (in manual and auto thyristor modes)

Centon FG20 No 275V, according by Mike Johnson in London

MR20 Ringflash Yes 4.38V, measured by Geoff Kitt

FG30 No ~200V, according by Harvey Shieff

FG30DX Yes 3-6V, according by Iam Hill

FH30 Yes ~4V, according by Steve Orton (who opened up his to disconnect the dedicated Ricoh pins for use on his Olympus)

FH85 Yes 3-4V, according by Dave Anderton

FH95 Yes ~5V, according by Philip Bennett

FG105D Yes ~5-6V, according by Tom Sou  but

he also reported spotty performance with the newest EOS cameras (a polarity issue?)

Cinon Pro 1090C No 180V, measured by Göran Samuelsson

Chinon S-250

Zoom Yes 5.17V, reported by Scott Martin

AF280 TTL

Yes

5.3V, reported by "Mike from Germany"

S-300

Your call

11V, reported by "emitc"

Cobra Auto 250 No 66V measured by Susan Stewart

440AF Yes 3.5V, reported by Richard Lukey

D650 Yes 5.6V, reported by Russell Garner

700AF Yes 4.4V, reported by "John-M"

Comet CX244 No 11V (EOS FAQ) Tony Wu also called Comet's distributor, who measured 11.5V for him, right there on the phone! (now that's service!)

Contax TLA20 Yes ~4V, reported by Peter Dewdney

TLA 30 Yes A trifling 2V, reported by Brad Grigor

(watch out for those extra pins...)

TLA200 Yes ~4.11V, reported by EJ Haas

Courtenay ColorFlash 2 Your Call 17.12V reported by Charles Ward,

(who reports problems using a Monolta 9xi  might be polarity?)

Cullman SL 16 Yes 4.5V, measued by Frank Gaehler

SL28 Yes 4.3-5.2V, measured by Juha Kopsa

SL 28/C[br>(same?) Your marginal call 6.3V, measured by Tom Crowning

34 AF/C Yes 4.47V, measured by Oliver Karstens

CX40 Yes 4.3-5.2V, also per Tom Crowning

MD 34S Yes 5.92V, measued by Michael Neuhaus

DC36 Yes 2.52V, also by Frank Gaehler

Digislave 2000 No 200V measured by Rich Scarlet

3000 Yes 7V measured by Rich Scarlet

Dynalite Any Iffy? 10V (EOS FAQ)

Elinchrom (various) Your Call 9V these days, but back over 20 years they ran as high as 30V, according to Elinchrom Customer Service via Tony Wu

Falcon

Eyes DE 250 Your Call... -14.5V, center negative; measuered by Martin Sørenson,

who had no luck firing it from a 300D

Fuji GA Yes 3.52V, reported by EJ Haas

FLMX29 No 216V, measured by "Tom on AOL"

GMI Infrared transmitter No 324V, measured by Sandy Levenberg

(just for IR?)

Hanimex TZ*2 No 225V measured by Simon Heath

TZ36 Yes 4.6V measured by David Cox

TX325 Yes 3V measured by Ulrich H&omlu;xterman

CX440 No 180V measured by "Dave L"

Pro 550 No 234V measured by R. Prieto

TZ755CP Yes 4.5V measured by Mike Mahoney

TS855 No 209V measured by Jonathom Holtom

tZ2500 No 196V measured by Alastair Cardwell

Hensel Contra 500 Your Call 16.3V @10microAmps for all output ranges, as measured and reported by Jan de Vreij Dwingeloo

Super Miniflash 500 No 41.2V per "Mike from Germany"

2-channel IR trigger Your Call 17V per Teemu Virtanen

Hitacon Mini No 190V measured by BigWaveDave

Holgon 2800 HC Yes ~5.4V measured by Whay Lee

Honeywell Auto Strobolite 52 No 115V as measured and reported by Karl Haug

Strobonar 892S Yes A tiny 1.25V (!?), measured by Neil Viglione

(who had to reverse the shoe polarity)

Ikelite Substrobe 50 Yes 5.28V from Harold Kroeker

Substrobe DS-125 Yes 5.14V, also from Harold Kroeker

Image CBD-30 Yes 2.9V, measured by Ray Watson

CZ-65 No 201V from Dave Stacey

CBZ-2500 Yes 3V from "Kelvin"

Itorex 3000Tw Your Call... 23V, reported by Asle Feten

Jessop 220TBZ No 212V measured by David Aldred

280ABZ No 70V measured by "TomCee" Cramer,

249V from Mark Butler

Kakonet 4500 No 210V measured by Aapo Tammisto

Kalimar 171A No 238V measured by Ted Coffey

175A Your Call 4-5V measured by Michael Meissner,

but 183V measured by Derek Misener...

TW-3600 Yes 5.71V measured by Tom Altman

Kenlock TV45 Your call 10V measured by Barry Maufe

Kitstar 50BC No 160V measured by Greg Bloor

KMart Pro-700 No 229V measured by Bob Rinelli

Kodak Gear Auto No 222.1V, measured by Steve Spartz

80030 (made by Tiffen) No 235.6V, measured by Jim Gatling

Konica Hexar HX-14 Yes 5.89V, reported by EJ Haas

Hexar HX-18W Your Call 8.4V measured by Craig Schroeder

Leica CF Your Call 10-11V measured by Joe Lim

Lumedyne All Your call 12V since 1992, about 100V before, reported

Direct from Lumedyne (see sidebar below)

Luxon 132 AFc Yes 1.23V(!) measured by Tarmo Pekola

Metz 20 B3 Nope 168V reported by Gerardo Nieto

20BC4 No 185V reported by Göran Samuelsson

20BC-6 Yes <5V per Metz-Werke, reported by Duncan Burt

23BC4 No 183V reported by Frantisek Daniel

28C-2 Yes <5V per Metz-Werke, reported by Duncan Burt

30B3 No 170V tested by Jussi Ohenjoa

30BCT4 No 68V reported by Peter Cooke &

165V from Paul Nelson,

172V from Vic

30BCT4i Your Call 7.4V reported by Jose Carlos Fernández but:

173V reported by Göran Samuelsson

32CT3 Iffy 22V with new batteries, reported by Rupert Vogl

32CT4 Iffy 12V reported by Lwo v IJzendoorn

32CT7 Yes(?) 2.88V, reported by Geoffrey Chan,

5.5V from "Mike in Germany", and

9.25V from Craig Lapp

32MZ3 Yes 3.3V, reported by Samuli Vahonen

32 Z-1 Yes 3.46V, reported by Johan K in the Netherlands,

4V from "KC"

32 Z-2 Yes 4.086V, reported by Joe Lim

34BCT2 No 211V, reported by Egbert Nolte

36C-2 Yes 6V, reported by "Alex from Italy"

36CT3 Iffy 20.9V, reported by Frank Melchinger

38CT3 Iffy 6.5V, reported by Kai Dröge

40AF-4C Yes 4.4V, reported by Robert Elsinga

40MZ-2 Yes 4.74V, reported by Benny Khaw &

4.5V from "Mike in Germany"

40MZ3i Yes 4.5V, reported by Ismail Mus

45CL1 Your Call 7.6V, measured by Jeffrey Gillian

(though Metz specs this unit at 6V, and assures us it's EOS-safe  while recommending a better E-TTL unit for best performance with the 300D, like the 54 MZ-3)

45CL4 Your Call 16.85-16.88V measured by Lee Phek Thong;

Teemu Virtanen measured 14V and

spoke to Metz directly about their newest G2 adapter

45CT1 No 600V

(Göran Samuelsson measured merely 218V on his, as did Toney Hall  multiple versions?) See this page for special info from Metz:

http://www.metz.de/1_metz_2000/m_pages_english/

main_index_e.php3?link=4&sub=1&linkname=mecablitz

(Thanks Mike Guidry for the tip on this one!)

45CT4 Your Call... 14V with NiCds, reported by Peter Andersen

25V measured by Frank Melchinger... (different editions?)

and Anders Lilja reported 24.7V, but it dropped to a safe 4.56V when connected to the Metz Adaptor SCA311,

12.7V from "Mike in Germany"

45CT5 Your Call 14.8V from "Mike in Germany"

45MZ-2 Yes 5V

50MZ-5 Yes 2.6V from Trevor Connell

54MZ-3 Yes 4.17V from Paul Schuurmans

56-1 No 211V from Woo Fei Wing

60CT1 Your Call 20.89V measured by Loring Palleske

60CT2 Probably Not 28.5 measured by Rupert Vogl

60CT4 Yes 5V (EOS FAQ)

202 No 200V according to Peter Sanders

402 No 206V on this circa-1974 strobe, according to "ejb" from the UK

404 No 80.2V from "Mike in Germany"

2034BC No 207V from Ernst Albert

Minolta Auto 22 No 240.1 measured by Derek Woodlands

Auto 25 No 210V measured by Steven Ferland

Auto 28 No 200V according to Wes Quigley,

only 43V from Gene West

Auto 32 No 192V measured by Rob Babcock

Auto 128 No 297V according to Ed White

132PX Your Call/No 20-30V per Minolta Customer Service, courtesy Karen Wetterling

132X Yes 2.2V per SJ Chandler

Auto280PX Yes 1.8V (!) per Richard Crow

Auto320X Your call 10.44V, measured by Thomas Whitehurst, but varying 5.4-8.9V according to Ian Hamilton

Auto360PX Yes 5.24V per "Nahau"

1800AF Yes A mere 1.88V per Lieven Blancke & Mark Ball

2800AF Yes 1.74V, per Manuel V. Galang

1.65V from Jeroen Haringman

3500xi Yes 1.88V, also tested by Manuel V. Galang, who reported good manual success with his G2

3600HSD Yes 3.5V, per Toney Hall

4000 AF Yes 1.85-2.5V, per Mark Vinsen

5400HS Yes 4.7V, measured by Hardeep

Minox FC35 No 131V reported by Poul Bekker-Hansen

MF35 No 194V reported by Göran Samuelsson

TC35 No 170V reported by Poul Bekker-Hansen

Miranda ZF-3 Zoom No 246V, measured by Rich Grochowski

630 CD Your Call 8.14-8.30V, measured by Robin Taylor

930 TCD Your Call 6.5V, measured by Tony Williams

Multiblitz Varilux 1000S Your Call... 6.5V, measured by Frank van der Pol

National

(Panasonic) PE-20S No 6.16V, per Akira So

PE-170 No 120V, measured by Nelson Pomeroy

PE-205 No 155V, per Mike Flynn

PE-256 No 270V from Piotr Szuszniak

PE-287S Your Call 8.3V measured by Kjetil Kling Ortveit

PE-300 No 33V measured by Kari Monkala

PE-380 Your Call 10.1V, measured by "Thierry"

PE-387S Your Call 7.8V, per Alain Gleyzes

PE-480 SG

Hammerhead Your Call 8.4V, measured by Les Lacey

PE-3057 Your Call 10.44V, per Luigi

PE-3550 Nope 32V, per Harry Malmelin

PE-3557 Your Call 9.7V, per Robert Lee

Nikon SB-8E Iffy 21-28.4V, measured by Don Knull

SB-10 Yes 5.11V measured by Danny Manchester

SB-15 Yes 1.55, per Teemu Vertinen,

a little higher (4.25V) for Paul Crane &

3.4V from Jack McDermott

SB-16 Yes 4.14V, per Harry Malmelin

SB-18 Yes 4.6V, per Joel Elias

SB-20 Yes 5.5V, per Nikon (via "Stuart")

SB-21B Yes 4.6V, per Bernd Pickahn

SB-22S Yes 4.9-5.3V, per Leon Obers

SB-23 Yes 5.2V & 5.5V on the units tested by Göran Samuelsson

SB-24 Yes 3.8V & 4.4V, agains tested by Göran Samuelsson

5.4V from Don Swanson

SB-25 Yes 3.68V, per Colin Ethington,

even less (2V) for Fred Phillips

SB-26 Yes 5.4V measured on a matched pair by Dave Tinsley,

only 1.4V per Andrew Cassino

SB-27 Yes 4.42-4.50V, per Paul Johnson

SB-28

and

SB-28DX Yes 1.5V, per Bharat Mistry

a bit higher  3.48V  from Patrick Hopkins 

Jeff Macwright got 2.8V from his SB-28DX

SB-30 Yes 4.5-4.6V, per Jack Azud

SB-50DX Yes 5-6V, reported by Nikon to Howard Forbes

SB-80DX Yes 4.23-4.29V, measured by Dave Tewksbury

Nishika Twin Light 3010 Nope 307V, measured by Brian Lindley

Nissin Digislave No 200V measured by Juha Kopsa

EF20 No 180V & 185V measured by Göran Samuelsson

21-A Auto No 130V, measured by Hans de Ru

26T No 227V, per David Peat

28TX Your call 7.5V, per David Aldred

280XP Your call 9V, per "BcBn"

Auto 300Z Yes Only 2V, measured by Gary Wong

340T No 190V measured by Eric Lejon

360TW Your Call 10.1V-10.5V, per Samuli Vahonen

360WX Digital Your call 10.5V, per Hannu Martiskin

360X Your Call 10V from Woo Fei Wing

2800G No 137V from James Tom

4500 GTE Yes 4.6V from Bill Otto

4800 GT Yes 4.55V using NiMHs, per Leon Obers

Norman 24/24 pack Your Call 11.8V measured by Phil Shima

200B (Series 450) No 100V, measured by Steve Wise, though

Brian Leonard got only 29V...

400B Your Call 10.25V, measured by Jan C. Doddy,

who found he had to flip polarity for it to function with his D-60

Superlight 800 Your Call 14.15V according to Phil Shima

(who mentioned it blew-out the sync circuit.. in a Leica M6!?! (amperage? polarity?))

P2000D Pack No 48V, measured by Peter ("gicleeman")

Novatron M-500 Your Call 7.5V measured by Lonnie Harrison

600VR Power Pack Your Call 12V according to Novatron, per Neil Lubin

Novatron will modify this pack to 6V for $15

1000 Pack Your Call 9.8V measured by Pat Taber

Olympus T18 Your call 4.8-8.5V, measured by "Andy"

OM T-20 Your call 5-7.4V as it charged, measured by Brian Zimmerman,

only 2.6v from Greg Clark, who also

has a few thoughts about varying voltage results

OM T-32 Your call 7.14V/8.4V, measured by J. Mark Morris/Russ Rosener,

9.5-11.3V from Tom Mac Inerney

FL-40 Yes 3V, measured by Harry M. Fetterman Jr

PS200 No 185V, measured by Stuart Lovell

Osram BCS25 Studio No 245V, according to Göran Samuelsson

168V & 176V, measured from two different strobe units by Craig Schroeder (see below)

BD25 Studio Yes 4.5V, measured by Craig Schroeder

VS340 Yes 5.3V, measured by Craig Schroeder

Sunny Boy No 188V measured by Craig Schroeder

Pentax AF-16 Yes 5V, measured by K.B. Lee

AF160 Yes 3.8V, measured by Gary Schaker for his 300D

AF200SA Your Call 7.65-7.72V, measured by Bill Miller

AF200T

AF280T Your Call 7.8V according to Pentax, and reported by John Glover

AF240Z Yes 4.8V, measured by Richard Hartland

Phoenix

Phenix BIF 82c Yes 6.0V, measured by Greg Clark

D79-BZS Yes Around 3.5-6V, reported by Phoenix Corp

and checked by "Tom"

BIF 82N Yes 5.5V, measured by Steve Spartz

HMS-98T No 250V, measured by Justin Kuo

Philips 16B No 252V, according to Arnoud Brouwer

18 No 218V, also according to Arnoud Brouwer

25B No 65V, according to Theo Lumens

P32GTC No 300V per Arnoud Brouwer

P36CTL Yes 5.2V measured by Bernd Schumacher

P36TLS Yes 4.3V measured by Arnoud Brouwer, and 5.64V from J.E. St-Laurent

P536G Yes 4.37-4.81V, measured by Fritz Washburn

using Philips's Canon A-series hotshoe

Photogenic AA-01A Your Call 10.3V per Jim Ngo

DR-1250 Yes ~3-4V measured by Richard Davis

(mail signed "John Smith"?)

Popular 606 No 61-71V, measured by Harry Malmelin

Posso Multi

Dedicated

ATD 25 Your Call 6.8V, measured by Pedro Gordinho

Praktica B32LCD Yes 4V, according to Praktica in Dresden &

forwarded by Anton Haakman

321A

No

114V, measured by Jeroen Haringman

1600A

No

222V, measured by Jonathan Holtom

Bauke Coperus points out that Praktica also relabels Achiever strobes

Prinz Jupiter 677TCB No 260V measured by Mark Salik

Profoto Compact Plus Your Call 23V for the 600ws unit, according to Loring Palleske 

which fits the 22-25V range reported by Profoto Customer Service and forwarded by Tony Wu

Promaster FM600 No 196V reported by "Tom on AOL"

FM 1000

No

258V also reported by "Tom on AOL"

FT1700 Your Call 6V according to Promaster, 207V as metered by Steve Seltzer,

though "Tom on AOL" got 289V!

FTD 5200

Yes

4-5V metered by Raymond Smiley

FTD 5500

Yes

~5V metered by Mark A. Serfozo

FTD 5750

Yes

3.95V metered by Jimmy Chancey

5900

Yes

5.5V metered by Don Swanson

FTD 5950

Yes

5.12V metered by Jim Horky

7000M Yes 3.0V, measured by Dennis Yep

Promatic FTD 4000 Yes(?) 6.16V, reported by Tom Deluca

Quantaray PZ-1 Yes (also known as the SUNPAK 400AF)

<5V, according to Harold Lacadie

QB-350A No 130V, according to Joel Kiblen

QB-SZ370 Yes 5.87V, according to Chris Joubert

QB-350A No 317V/290V, according to Adam Miller/Neil Viglione

QB-383 Super Yes 3.83V, according to Thom Doonan, who suspects it's a re-labeled Sunpak 383

QB-6500A Yes 4.3V, reported by Don Thompson

QAF-6600 Yes 3V, reported by Francois Candela

5.14V from Keith L. (Rupe) Rupert

QTB 7500A Yes ~5V, reported by Mike Mantoudis

QTB 9500A Yes 4.93V, reported by Larry Haas

4 Radio Slave[br>(older?) Your Call 6.8V, reported by Jeff MacWright (who also had a 4i)

4i Radio Transmitter Your Call 8.45V, reported by "Lad",

7.5V from Toney Hall

and 8.71V from Jan C. Doddy

Radio Slave II Your Call 5-6V, measured by "Lloyd", aka "Sparky",

8.98V from Bryce Turner

Raynox DC-303 No 254V, measured by Mika Yrjola

Regula Variant 740-1 Your Call 13.4V, measured by Lukasz Wysokinski

Revue C35S Your Call 10.58V measured by DJ Szegecs

C4500 No 230V measured by Fred Huttinga

Ricoh 323 Your Call 10.25V, measured by "Piotrek"

Rokinon 3600 Your Call... 24V, center positive; reported by Peter Ungar, who also reported that a Canon G1 wouldn't fire it

Rollei 100 XLC Nope 325V, reversed polarity, according to Gerardo Nieto, &

356V from Robin Taylor

134B No 105V, measured by Olaf Ulrich

Beta 3 No 116V, measured by Craig Schroeder

Sigma EF 430 Yes 10-13V, measured by Dennis Deblois

only 4.63V from Tom Helge Hjørnevik

EF 500 Super Yes 5.9V, measured by Lou McLaughlin

Soligor MK-2 No 230V, measured by Rich Grochowski

MK-24AS No 37-41V, measured by Michel Blanchet

30DA Yes 5.25V, measured by Greg Clark

MZ-400AF Yes ~4V, measured by Jouni Pekkanen

SP

Systems Excalibur 3200

Excalibur 6400 Your Call 8.4V, reported by Chris Rocca

150 Yes 6V from Ted Coffey

920MDLVP Your Call 8.4V from Ted Coffey

Speedotron D604 No 64V (EOS FAQ)

D802 No 69.7V from Don Swanson

1205CX No 60-70V per Speedotron customer service, and forwarded by Tom Bolton. Speedotron makes a low-voltage afdapter, part #35248, with MSRP $36

2403CX No 66V (EOS FAQ)

2405CX No 70V reported by EOS Paul Chaplo, M.F.A.  whose dealer promptly put Safe Syncs on all their rental units

Spiratone

(Adorama) Spira-Lite Sr No 186.9V measured by Don Swanson

SS600 AC No 219V from Craig Schroeder

SR

Electronics DSF-1 No 218V, reported by "Brian Z"

who also built this adapter

Digi-Slave Pro Yes 5V, reported by SR Inc via Paul Parlee

Digi-Slave Deluxe 2000 Your Call 15V, reported by SR Inc via Paul Parlee

Digi-Slave Deluxe 3000 Your Call 7.8V, reported by SR Inc via Paul Parlee

Starblitz 16 M Slave No 170V, reported by Ray Huttenmeister

200m-Quick No 237V, reported by Jeff Oldbean

250 BAZ Your Call 6.8V, reported by Mark Brooke-Smith

320 BTZ Yes

but... 5.66V reported by Dominique Dartois,

but it won't fire on a G2  it actually turns off the flash circuitry in the camera!  though it functions on his mechanical Nikon F2

1000-Auto Macro Lite (Ring Flash) Yes 2.9V, reported by Jarno Verhoeven

2000BTZ No 254V, reported by Pasi Bergman

and 38.8V from Jaime Font Dominguez

2200BA minitwin No 225V, reported by Ray Huttenmeister

3200BT-Twin-S No 64V from David Cunningham

3300 DTS Your Call 10.7V from Roland Karlsson

3600 BTV Twin No 170V from Teemu Vertinen,

150V from Greg Clark

3600 DS Yes 4-5V, reported by Bob Ghysels

4000AF Yes slightly under 6V, reported by "Ed" & Peter Cooke

Sunpak



(More

strobe

models

than

you

can

shake

a

stick

at!) (Morestrobemodelsthanyoucanshakestickat!) Ringflash Your call 6.85, measured by David Dodell

"Digital Flash" Your call 6.4-6.6V, reported by Geert Bosch,

6.78V from Sandy Levenberg

(Though of course zero volts when used as a slave...)

Remotelite II Yes 4.12V, reported by Jeroen Haringman

MG-1 Your Call 6.99V, reported by Kai Zhu

GT8 No 200V, reported by Marcos Schwindt

DS20 Your call 6.2-6.63V, reported by Marco Paganini

25DX Yes 5.46V, reported by Harold Kroeker

Digi Robot 32 Yes 3.75, reported by Gary Hays

GX14 No 160V, reported by Robert Rozee

GX17 No 288V, tested by Jason Wiebe

30DX Your Call 10.4V, measured by Ted Pembroke

7.5V down to 5V for Mon Francisco,

but Fred Phillips got a mere 4.6V

Auto 30SR Your Call 6.4V, reported by Mike Richter

Auto 36DX Yup 2.4V, reported by Fred Phillips, &

5.86V from Bob Rogers

Auto 36FB Your Call 15V, per Paul Nelson

AP-52 No 144.8V, according to Kai Zhu, and

188V by another netizen who sent a photo of his test rig, strobe, & reading...

120 J Your call 11.01V-11.6V (depnding on the meter used),

measured by Sandy Levenberg,

10.9-11.6V reported by Bryce Turner with varying batteries,

but 24.3V by Toney Hall

Auto121 No 155-215V, measured by Lawrence Yau

Auto124 No 203V, measured by Simon Block

Auto130 NO 200V, measured by "dhamant"

MX130 No 190, measured by Göran Samuelsson

134 No 43.5V, measured by Janne Rajala

Sp140 No 180V, measured by Hjalti Jakobsson

144

(144pc?) Yes... probably 5.8V, reported by Michael Kirby

6V, reported by Martin B. Reinhardt

6.8-6.95V, reported by Pierre Hurtubise

(Different batteries, or different versions of the same strobe?)

6.16V, per Sunpak (via Pierre H.)

200 No 171.5V measured by Paul Lane

Auto 221 No 173.5V measured by Robert VanTichelt

Auto 221D Your Call 9.26V measured by Akira So

Auto 222 Your Call 6.7V measured by Dean Glanville

Auto 240 No 38V measured by "Didier" en France

244D Your Call 7.55V measured by Dave Oshinsky

Auto266SR Yes 5.7V measured by "Zapped"

Auto322 NO 227V (Jay Lorenzana reported a mere 149V, after a thorough test of his unit)

Autozoom333 Your Call 7.9V measured by Roy Campbell

333D Yes A big 2.0V measured by Tom Troughton,

4.24V from Kai Zhu

344D Yes Actually reported as less than 0.25V, by Adam Rubinstein

(though Tony Bonanno's rated 4V)

355AF Yes 5.36V, reported by "gpigg"

383 Super Your call 3.74V, per Colin Ethington;

3.83, per Curtis Avery;,

6.85V, according to Sunpak's techs;

6.86V per Geoff McKnight

6.8V per Phil Shima using a Quantum battery

7.05V per Jon Boehm

& 10.29V from Dave Dill...

different batteries, different versions, or...? Joe Templeton measured 7.2V and had a reassuring talk with Sunpak

Auto 388 Your Call 7V, measured by Göran Samuelsson

Auto411 No 193V, measured by Nick Adams

422 Your Call 10.75-12V, measured by "Wayne",

6V from Kent Fulcher (or is the 422D a different model? Richard Khanlian also measured 5.5V for his 422D)

Auto431 No 30-50V, according to Marcus Bletz

433 Your call Reported at <8V

433D Your call 7.8V, according to Jeff Tokayer &

6.4V measured by Kristina Sterling,

but only ~4V from Gerald Wang, who also noticed some variation when using alkaline versus NiMH batteries, while

Peter Yund got 14V

444

444D Your call 10.8V, according to Dave Grandeffo,

who's been using it for a couple of years on his

Coolpix950 without a hitch.

Mike Flaherty got 11.49 and plans to use it on his D30

Harold Kroeker also got 11V with both Nikon and Contax adaptors

Auto433AF Your Call 7.52V, reported by Wade Herman

(6.9V, according to Sunpak's spec reported by Mike Dubrow)

522 Your call? ?? 10.84V, measured by Charles E. Hunt III

but 170V reported by Martin B. Reinhardt and

197V from Conrad Hoffman & 195V from "Adam"...

22V from Ted Mishima  so be careful and check your strobe, there may be more than one edition of this unit out there!

Michael Foos checked with Sunpak, who reported "usually 190V."

544 Yes... 4.6V, reported by the mysterious "Tom"...

though 6.75V reported by Gary Hays

555 Your call 6.67V on mine 

Ed White reported varying outputs from 4.1V to 6.9V.

An email from Sunpak/Tocad assures me that no cameras have ever been harmed by a 555.

611 Your Call 4V reported by Kent Fulcher, but

some old models will trigger at 190V, according to Tocad (via Jonas Lohr)

622 Pro

(not Super) Your Call 8V reported by Lou McLaughlin, 6.5V from Don Swanson

622 Super Your Call 8V, reported by Tim Brown

888AFZ Yes 5.8V, reported by Franck Michaud

1600A No 46.6V, measured by Andrew Hall

Auto 2000 DZ Yes 3V, measured by Ken Kane

2600 No 73V, measured by Ted Richards

Auto Zoom 3000 No 246V, measured by Pontus Fred

Zoom 3600 thyristor No 194V, measured by Ray Huttenmeister

Auto Zoom 4000 No 200V, measured by Max Osmond

Power Zoom 4000 AF Yes 3.6V, measured by Kees Dorsman

MS-4000 monolight Yes 5.8V, measured by Alan Fairley

4205G Yes(?) 3.75V, measured by Igor Wesdorp

(6.*V from Göran Samuelsson and Arnoud Brouwer)

PZ5000AF Yes 5V, checked by "MikeTwo" thru ToCAD's (Sunpak's) own John Long

Topca 320BC No 100-105V measured by Martin Marusak

330CX Yes 3.4V measured by Oto Durkovic

Toshiba ES-7 No 250V, measured by Anton Douwe

QCC-25MD Your Call 11.4V, measured by Sean Phillips

ES-30 Your Call 15V, measured by Ken Hardy

312 Nope 197V, according to Göran Samuelsson

Tumax DS20S Yes (?) ~4-6V, measured by James K.W. Wong,

who also received a mail from Tumax saying 6.8V!

116 No 185V, measured by Kiriakos Triantafyllou

988TWZ Your Call 7.6V from Woo Fei Wing

Unomat B14 Servo No 190V measured by "Alchi"

B20C No 210V measured by Tom Mac Inerney

320TCD No 34V measured by James Tom

P360TCT No 160.3V measured by Luis Sousa

Vesta Auto 1200A No 25V measured by Louis Allard

Vivitar 100 No 270V, per Nigel Kirlew, and

256V measured by Bambi Torres

Auto Bounce 40D Your Call an oh-so-close 6.2V, per S. Ciccarelli, who's happily using it on his Powershot G2

AF-N 132

(Nikon) Yes ~4V, from Per G. Østerlie

161 No ~60V per Howie Hecht

Auto 215 No ~i198V per Steve Orton

253 No 200V, from BigWaveDave

255 No 284V, checked by Greg Sutton

272 No 240V, checked by "RoyDM"

273 No 290V, also from Nigel Kirlew

283 NO (old versions)

Your call (new versions) Older units have been reported as high as 600V!

Recent (post-'87) revised 283's ("Made in China") are safer with modern cameras, running around 9-10V. Bob Atkins reports some as low as 5V. Recently units marked "Made in Korea" have also appeared... measured at 8v by Andrew Cassino and Tony Bonanno.

Kevin Omura used a Quantum battery and got a hefty 261.4V out of his (sn3012330), while

Göran Samuelsson had two units with different voltages: 230V and 190V. Other reports have had similar variety, up to 270V.

285 Your Call 7.45-7.8V, according to "Bob from MediaPlus.com," Mike Dubbs, and "Steven at bellatlantic.net."

Peter Savage checked his 285 and 285HV units, and read only 6V.

Mike Flaherty measured around 8.5V on his 15-year-old 285, and feels safe using it on his EOS D30.

Older units may rate higher.

One correspondent had three units ranging from 8.3V to 33V...



Alan Latafat Correa checked with Vivitar and they clarified:

The 285HV has a voltage of 12V. The 285 has a voltage of 350V. Hope this helps you.

(Thanks Alan!)

365 No 46V, according to Kevin Omura

530FC Your Call 8.3V, according to Bob Thibodeau

550FD Your Call 8V, according to Ted Felix 

only 4.24V, per Stephen Sugiyama, and

5V per Timothy Horn (serial 0031524)  but

6.66V from Rick Zotz, 7.5V from Tri Do, and

10.18V (serial 5031715) by John D. Duvall...

560D Your Call 15V, according to Vivitar via John Faughnan

Series One

600 M/P/O

Minolta

Pentax

Olympus Your Call 8.7V, measured by "Keoeeit"

628AF Your Call 6.8V, according to Louis Carresi

using a Nikon shoe

728AFC Yes 5.77V, per Petteri Luukkanen

730AFC Yes 3.25-3.37V, per Neuz2U (Allen N)

730AFM Yes 6V, checked w/Vivitar by Ashish Bhutada

Series 1

836AFC Your Call 3.6V, measured by Saul Gurdus

1900 No 90V, measured by Samath Wije,

127.3V from Ted Coffey

2000 No 54.4, measured by Greg Speth, but

180V+ from Lou McLaughlin, who reports that Vivitar appears to have made completely different strobes with this same model number....

202V from Chuck Roake too

2500 Your Call 10.95V, measured by J. Mark Morris,

14.5V from Lou McLaughlin

2600 No 148V, reported by Ted Felix

2800 No? 140-170V, according to Bart Van Oudenhove,

though Paul Durant reports his new one measured 20V.

Dave Senciall says his G3 wouldn't fire his 140V version,

and Jack Benson reported his 2800-D (same model?) returned only 4V...

& 33.6V, checked by Gunars Lucans

3500 Yes(?) 6V, checked w/Vivitar by Bart Nathan

though Bart Daatselaar reported 9.1V from his 

Scott Slayman tried his with varying dedicated models and got varying voltages in the 4-7V range

3700 Your call 9.1-9.4V, checked on four different units with a Fluke meter by Jim Sharp

3900 Your call 9.9V, checked by Larry Wilson

4600 Your call 19.5V, checked by Dave Grant

4900 VT Yes 4.2V, checked by Wolfgang Kurth

Macroflash 5000 Yes ~6V, checked by Jay Philippbar

5200 Your call ~9.4V, checked by "Dr. Droo" Baxter

5250 Yup 5-6V depending on the module, checked by Jeff Wiseman

7600 Your Call 7.5V w/new batteries, measured by Dennis Yep

Voigtlander VC21B No 118V measured by "rjsch"

Wein Pro Sync 1

IR transmitter Your call 15.18V, measured by Sandy Levenberg

(Newer model is reputedly 6V)

Pro Sync LX-2 Your call 10.36V, measured by Jan C. Doddy

200 Flash No 122.7V measured Don Swanson

White

Lightning All See listing under "Paul Buff," above

WOC WOC Yes 5V reported by Matt Dovner

Woctron ("WOC"?) 250 PC Auto Yes 5V reported by "Alex from Italy"

2500 PC Yes 5.5V reported by Dmitrios Papadopoulos

Yashica CS-202 Your call 11V, reported by Mike Flynn

CS-201 Auto Your call 11.9V, reported by "Mike from Sweden"

CS-221 Auto Yes A wee 1.75V, reported by Ken Kane