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See my comment about Kevin's photos in his thread, re: creating visually the same emotional reaction you get tactically by touching an object.
The salt on a pretzel has texture, but the texture is really not something you react to when eating one. That's more a reaction to the salty taste, crunchy outside / soft inside mouth feel texture, or the anticipation of those sensory inputs when looking at one. Ring the bell, the doggie salivates in anticipation
Perception of texture in a photo is a "connect the dots" linkage of the contrast pattern in the 2D photo with seeing textured objects in similar lighting in person, but your brain only knowns what they actually feel like from the experience of touching them.
One of the apparent contradictions in lighting objects is that hard smooth objects are more accurately rendered with "soft" diffuse lighting but soft fluffy objects like fur and feathers are more accurately rendered with "hard" collimated sources because the 3D shape clues to the fur / feature texture comes from sharp specular reflections on the top side nearest the source and dark hard shadows (on light fur). On a black cat nearly all the clues about the fur texture come from the specular highlights. Fur and feathers have micro-planes that reflect the light like a mirror. I've got a tutorial about this cause and effect "Shooting Critters" on my web site: http://photo.nova.org
No worries on eating all the pretzels.... I'm more partial to popcorn when snacking.
Edited on Jan 21, 2013 at 03:13 PM · View previous versions