Next week (Feb 23) Sigma will announce the new MC-11 Sony E-mount electronic adapter we leaked today (SAR article here). But they are also going to announce a crazy fast tele zoom! The 50-100mm f/1.8 which will NOT be available in A-mount. But if you use the MC-11 adapter it will be fully functional on all E-mount cameras! Here are the specs:

APS-C format

15 elements in 21 groups,

82mm filter thread

Closest focusing distance: 0.95m

Magnification ratio: 1：6.7

Size: 170.7 x 93.5mm

Weight: 1490g

9-blade circular aperture

New HSM motor

Estimated price: 167400 yen

Available in Canon EF, Nikon F and Sigma SA Mount.

Available on April 22.

What a crazy lens :)

via Digicameinfo.