Archived posting to the Leica Users Group, 2010/04/23

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Subject: [Leica] Checkerboard illusion
From: lrzeitlin at gmail.com (Lawrence Zeitlin)
Date: Fri, 23 Apr 2010 12:52:06 -0400

Goeff writes:
"To add my two Aussie cents (which is about ~2.15 US cents today, woohoo)
consider the effect on your perception of the surrounds also. Specifically
the background tone and any border you may use. The gallery background is
quite dark neutral grey (a good thing). A lighter border can make the images
'pop' (which is why all muy posts tend to include that). Another trick is a
very light grey border which fools you into seeing brighter highlights too.
The best example that I know of to illustrate how adjacent tones affect your
perception is here."
http://web.mit.edu/persci/people/adelson/checkershadow_illusion.html

- - - - -

This is a good illustration of the truth of my favorite photographic hobby
horse - that the future of photography is in software, not in lens design.
It is apparent in LUG submissions already. Virtually every photo is altered,
sharpened, color corrected, spotted or otherwise modified by the magic of
Photoshop or some other image processing program. The wonderful Leica M
digital cameras use software, triggered by lens coding, to minimize
vignetting. Just about every P&S camera offers both internal image
sharpening and noise reduction. Barrel and pincushion distortion can be
eliminated by software. Why bother to correct in expensive aspheric glass
what can be corrected by a few lines of code. Remember that you see what you
expect to see, both in a photo and in real life. It is nature's way.
Larry Z


Replies: Reply from jbm at jbm.org (Jeff Moore) ([Leica] Checkerboard illusion)