Lighting & Shadow Illusion

by on August 17, 2011

in Lighting

Check out the above video, which uses some lighting magic to make our photographic brains hurt.  After you’ve watched it, can you explain why this illusion occurs?  Leave a comment below.

[via Strobist]

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{ 8 comments }

1 Fog August 17, 2011 at 1:37 pm

… gray matte semi transparent paper …

2 Dominic August 17, 2011 at 1:57 pm

It’s because it’s made of a reflective material.

3 George Birbilis August 17, 2011 at 3:27 pm
4 Dominic August 18, 2011 at 9:56 am

Thanks George.

It’s really just an illusion!

5 Patrik August 18, 2011 at 7:02 am

The “shadow” is printed on the paper. Her hands never experience that “shadow”, they are always lit evenly from above. Same goes for that piece of paper she moves. Stop the film once the piece is lying half-way across the shadow’s edge. There is no edge on the piece she moves either. Looks really nice, but the light behind the pillar is not strong enough to actually cast the shadow you think you see.

6 Dominic August 18, 2011 at 10:01 am

If you want the proof that it’s just an illusion, clickon the link published by George, download the image, go into Photoshop, cut the “B” square and drag it onto the “A” square. You’ll see that both squares are identical.

http://web.mit.edu/persci/people/adelson/checkershadow_illusion.html

It’s amazing how easily our eyes can be fooled!

7 Michael McNulty August 19, 2011 at 7:16 pm
8 Adam August 21, 2011 at 9:44 am

It’s magic!

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