While on a kayaking trip in the Great Lakes, I stopped just after sunset to shoot some images on the beach. The sky was still bright and very saturated, while the sandy ground was losing light and getting dark in my exposures. My kit was small, and I had no graduated ND filter, but I came up with something that worked well in a pinch.

I’ll start this with a disclaimer: this trick isn’t meant for pros out on a high paying gig– if that’s you, simply pack your grad-ND. People who can do HDR in camera might not find this useful either. If that's you– move along, nothing to see here. For vacation photogs and others wanting to have some fun with experimenting, please read on.

Light winds, rolling waves, and a colorful sunset bookmarked the end of a great weekend while I hung out at a State Park in Michigan’s thumb. I found it funny that the crowds all left once the sun went below the horizon, and the only people still on the beach were my friend Scott and I, both armed with DSLRs and tripods. We had spent the previous few days kayking 20+ miles of shoreline, only taking what we could pack into a 13-foot kayak, so our kits were pretty limited. That, and the fact that this trip wasn’t for a video or photo gig (more about solitude and beer) so I was definitely in more of a “vacation photo” mindset.

I enjoy the saturated colors and versatile light that comes just after the sun has set, so I set off along the beach to make some images in the later part of magic hour. I came across some sandcastles, and then a giant foot made out of sand. I started here taking a few shots to just see how things looked, and messed with settings and color balance. I metered on the sky first, recomposed, and this was my result:

I then metered on the ground, so my second photo came out with the sky over exposed.

Not very satisfied with this, I knew the range was too great. I yearned for the grad-ND that I didn’t have with me. Why not try to fake it I thought? So by engaging liveview, I held my hand over the lens, and lined it up with the horizon. I shot an exposure of about 4 seconds, and about 2 ½ seconds into it, I pulled my hand up and out of the frame.

It took a few shots to nail the timing, but immediately I could tell this would help me get more range out of a single exposure. One issue that I could tell from looking at the images on the LCD was that the area I was covering with my hand wasn’t quite perfect. (You can see in the image above that there some dark spots along the left part of the frame from where I wasn't precisely on the horizon) The curves along my hand and finger didn’t line up as well as I wanted them to. So, I reached into my pocket for my phone, which happens to have a flat edge without any buttons. I suppose you could use anything, as long as it is flat-sided. A lens cloth perhaps? Credit card from your wallet?

I tried to capture a few more images with my phone as a makeshift graduated ND filter, and just have some fun on the beach looking for interesting lines and colors.

Here’s another before shot, with no processing except for some cropping:

Here’s the same shot with using my iPhone to cover the lens for part of the exposure. This shot has the exact same camera settings (ISO100, F13, 4.0 Second exposure) as the previous image:

There have been plenty of times I’ve been on vacation or on a backpacking trip and didn't have a graduated ND filter. I know it doesn’t take up much space, but I try to pack light and fast when on long hiking trips. I’m hoping this trick will work for me again, and maybe some of you will give it a shot and make it work for you as well. It’s far from perfect, but I for one enjoy the creative experimenting from this kind of thing– it’s part of what I enjoy about photography.

There are a few things that I should note too, if not obvious.

• This will only work if you’re doing an exposure longer than about 2 seconds. If you need to freeze something in your image that is moving, this trick can’t help.

• If the sky is about 3.5 stops brighter or more, the results are rather poor. I tried to re-create this hack when the sky was still very bright, and it looks very unnatural, not to mention it’s hard to keep the shaded area perfect.

• It helps to have a mostly linear horizon, like shooting at a beach or lakeshore. Objects in the distance like trees or rocks above the horizon line might lose any detail by using this method, but every photo is different, so experiment with what works for you.

• Why not take 2 exposures and composite them in Photoshop? Sure, you could do that. But I’m not the kind of person who likes to fix things in post if I can help it. I do 90% of my post-processing in Lightroom, and it’s a breeze. If I can nail the exposure and range in camera, and then do tonal adjustments and some minor spot exposure work in LR, I’m a happy camper. There’s something about getting an image in camera that just feels more genuine than compositing multiple images in Photoshop. I might be the only one that would ever know, but it’s important to me.

• HDR from multiple exposures is also a solution, so if that’s your thing, rock out. I still meet plenty of people who aren’t familiar with good HDR techniques, but would try this trick instead, so it might help them get into it.

• If you slowly remove your hand/phone/whatever up and out of your shot, you can really get a gradient that looks nice. Move it out quickly, and it might be a bit more uniform, except for the normal vignetting that a lens would show.

• Other things you could use include a microfiber cloth, grey card, notepads, iPads, t-shirts, pretty much anything that is flat. If you need some curve to it, a baseball cap might do the trick.

• Experiment! This method could also be used for sunrise, and in other applications where you can get away with a longer exposure and using straight angles.

All images by Mike Wilkinson.