The 'Survey' photo is of a friend and collegue who met me for lunch last week.
We met at a new sushi place, my card statement says it's called Sushi Q, but there is no name visible. Anyway, here's a bento lunch, they're on 19th Ave. south of Dunlap. I have to recommend their Poke salad, the sushi chef is a master of seaweed.
When the subject appeared, my dining companion struck a photogenic pose, and I snapped away, slightly off center, no flash, with an Olympus D-100. This picture was selected for the clear face, which has been scrambled here.
Using Photoshop's Channels palatte, the red, green and blue channels were separated and saved into individual layers of a new document:
The background of the green channel is dark, but skin is light. The blue channel lacks shadow detail, but does have very dramatic shading. The red channel has light walls (they're red) and extremely light white skintones.
The red channel was not used at all, and the green and blue channels were recombined in equal proportion to make a blue-green image. You could accomplish this optically with a 'minus red' filter.
The cyan toned image was desaturated, resulting in this very flat image. The low contrast reminds me of a photographic negative. In fact, the handling of the image from here on is similar to processing a B/W photograph with the Zone system.
The contrast is expanded with Photoshop's Curves tool. Curves is like development modification, but redoable. Stretching the image histogram imparts a film grain look to the picture.
No dodging or burning was necessary, so the image was cropped, resized and dressed for presentation.
