Used a 30 second exposure and a black card with the camera on a tripod. Exposed for a few seconds at one position, then exposed at different positions blocking the light between exposures.
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Composition - I love doing shots like this, so critiquing this one is very cool. High marks for creativity. I think more linear, so I'm sure if I did a shot like this it would be a straight line. This is a good idea though and I think if it were to be a little clearer, it would've done much better. The picture is a little muddy from the long long exposure. Another possibility to do this is with a strobe, panning the camera between flashes. I don't like the lighter area at the bottom right. It makes the little black stands on the end of the timer show up too much. They're not so noticeable where its very black, but in that greyer area they are sort of a sore spot. The reflection on the leftmost one is a bit distracting too. I also don't like how the last couple are very white where the sand overlaps. That really is unavoidable unless none of them overlapped.
Technical - A great study in a different technique. I know I've done a few pics with long "simulated multiple" exposures with some decent results but I think this might inspire a few folks to delve into a little different aspect of their photography. The lack of focus is the major problem with this. I'm not sure if you had a little camera shake or if its just that they didn't expose quite enough but they are definitely fuzzy. I know my first long exp. pic took about 45-50 takes to get it right. Good thing my wife was patient. Setting the aperture to F8 seems kind of high to me. Mostly due to the fact that you need even more light than if it were set to 3.6 or something substantially lower. The actual exposures look just about right though so you must know something about that more than I :) The framing is very good, filling up enough of the frame but not too much.
Overall - I like the creativity and technique of this picture a lot. I think it could use a little honing to solidify it though and it wouldn't have to be anything drastic. I would recommend trying a strobe, you could control it by hand to flash a couple times fast, the slow it down, move the cam, and turn it up again, so on and so forth. I keeps you from having to keep covering the shutter every time. If this could've been sharper I think it would've done substantially better. It's still a good image. Good luck in your future challenges. I'll shut up now. - Bob
This is an interesting effect, however the sand in the bottle still is sitting in the bottom of the bottle, even when the hour 'appears' to be on its side!!
Great shot, and a fantastic take on the challenge! Not only is time captured in the hourglass, it is captured in each separate position in the frame. Well done!
at first I was kinda "blaw" but then I noticed the consistant decrease/increase of the sand as it goes down, it makes a really cool tapering pattern if you look at it as a whole design rather then repeating shapes, I like it.