The Variables of Photography

Three years ago, I noted the following:

There are many variables in photography, just a few include, but are not limited to:

1. Big Picture
   1. Concept
   2. Subject Matter
2. Shooting Variables
   1. Film Choice
   2. Shutter Speed
   3. Aperture
   4. Perspective
      1. Camera Angle
      2. Focal Length
   5. Composition
   6. Color Palette
   7. Light Quality
   8. Light Direction
   9. Light Ratio
   10. Film Format/Size
   11. Subject Size
   12. Location/Backgrounds
3. Printing Variables
   1. Contrast
   2. Density
   3. Tone/Color
   4. Paper Surface
   5. Print Size
   6. Borders

A successful photographer strives to be consistent in as many variables as possible for any given series, deviating where the opportunity for creative or emotional impact outweighs the need for consistency.

While this assessment still holds true, I now believe I need to expand the conceptual categorizations, much as the technical has been enumerated. I'm not abandoning Alexander's Pattern Language concepts, but considering how they can be applied to subject as well as physical units.