Photography Demonstrations

[KeithB]

I am going to give a talk to Engineers about "Digital Photography - To the Fourth Dimension!"  About technical aspects of photography.  (The four dimensions are aperture, shutter, iso and white balance - which digital photgraphy allows us to change for every shot)

Can you guys think of good ways to demonstrate these "dimensions" ?

Aperture, shutter speed and iso are pretty easy - but I am open to suggestions, white balance is the one I am puzzling over.

Other cool digital photography demonstrations might be interesting.

[dwdong]

Take the same subject (a person?) under different lighting conditions (sun, shade, fluorescent, tungsten) and show the differences in tones (ie - color temps) and then white balance to show how the photos can be adjusted to give the same skin tone with each of them.

Then take one photo and white balance it to different color temps to simulate warmer, cooler, bluer, and other tones by varying the white balance.

[Bob Atkins]

If you shoot RAW, you can show the effect of different color temperature settings on one show, since RAW allows you to select WB after exposure.

[KeithB]

Both good ideas.  Bob, on this page:
http://www.bobatkins.com/photography/digital/canon_fall_2006.html

You mention a link to a http://web.canon.jp/technology/canon_tech/explanation/multi_zone.html site at canon which talks about exposure.  That link is dead now.  Do you know how Canon might have rearranged its site and where this file might be?

As far as the other goes, I think I will also take a shot in our lab with daylight balance to show how green the flourescent lighting is, and then a shot with auto balance and with flourescent balance.