Help dissect this photograph

[alfa147x]

This photograph:

http://www.chasejarvis.com/blo...s/Colby-Table-Post.jpg

I would love to be able to pictures like this
So im thinking its 23 exposures

21 (@9frame/s) of just the guy jumping then one of the scene without the skier then one exposed to the sky? (is that right?)

also is the easiest way to go about doing this using the screen blending feature in photoshop?

Thanks!
~Alfa147x

 

[arrfep]

There's no need to make separate exposures without the skier or for the sky. It's a pretty simple process, really. Set exposure just like you would if you were taking a picture of the skier just standing there on the slope, as if that was the only photo you were going to take. Then when he does his jump, blast off the 21 frames of him in motion.

Each one of these will be a properly exposed photo of a skier in motion.

Then stack all 21 photos. Assume that the bottom most layer has the skier on the far right, and the top most has him on the far left, with all the middle layers in their proper respective places. Then you simply begin to erase each layer so the skier shows up on the layer below in a different position. If they are stacked with a normal blend mode, the act of stacking won't affect scene exposure. And since they were presumably taken with the cam on a solid tripod, there's no need to do any aligning, since they are all framed perfectly the same.

 

[xchangx]

Some cameras will actually do this for you. I think my D300 will, never messed with it though

 

[shocksyde]

Originally posted by: xchangx
Some cameras will actually do this for you. I think my D300 will, never messed with it though

Wow, that's a cool feature to include! Does my Canon 50D?

 

[xchangx]

Originally posted by: shocksyde

Originally posted by: xchangx
Some cameras will actually do this for you. I think my D300 will, never messed with it though

Wow, that's a cool feature to include! Does my Canon 50D?

I don't think Canon's have the option. Not that big of a deal though, just use photoshop.

 

[rivan]

arrfep's correct. Screen blending won't be correct. Leave the blend mode normal, stack them and use layer masks to only show the skiier on layers above the first.

Edge blending shouldn't be an issue assuming all the images are exposed identically.

Depending on your target's speed, 9 fps may be too fast or too slow (the target would move too much or too little against the background). Too fast is easy - just keep every other, or every third image. There's not a heck of a lot you can do about too slow.