Digital Photography

Note : You might be looking for my photo gallery instead.


What this is about

After many years of shooting film I've finally gone digital.

One of the areas I now need to learn/relearn is image processing (e.g. "darkroom technique"). I never did this for color film, but I was aware of what was possible so I could talk to the labs. For digital I'm getting much more into my own image processing.

Reader Beware! I'm a software engineer by trade and anal retentive by nature and training, so my information here will tend towards the technical and measurable. This is not to say that I don't care about the artistic: art is what makes a picture worth looking at, but I've always found "art" much harder to rigorously analyze.

My first detail area is on noise reduction in digital images. (No, "noise" isn't all about sound -- visual noise is about the random specs in an image.)

Reducing Noise

Noise Reduction -- an analytical comparison of Noise Ninja to Neat Image

Shooting in the Raw

Raw files are about 3.3x larger than JPegs but give you more flexibility "in the lab" (Photoshop or Gimp or whatever) in exposure, color balance, contrast, etc. Don't shoot RAW if you're not going to Photoshop the pics. If nothing else they don't look sharp. There's a good reason for that.

For more info check out this article .


Microsoft XP Raw Image Powertoy If you shot in Canon or Nikon RAW mode here's a Windows XP Explorer plugin that teaches XP how to understand RAW files. It allows you to view/organize your pics under explorer but it's surely no substitute for Adobe Camera Raw.

Articles and Information

Ron Bigelow has a series of very good articles on photoshop techniques.

Here's a rigorous comparison of film and digital resolutions. This guys analysis looks pretty good and shows why film is pretty much dead for 35mm general photography at > ISO 200. (Note all the qualifications there.) Here is the other side of the coin talking about digital vs 4"x5' film.

(last updated 2006-12-04 21:34 GMT )