(Sorry for the delay in posting the second part in this series. Here’s what I had been doing: http://ubercyber.net/touchTrack.)

We have discussed a little bit about “composition” in photography in the previous article. I tried to keep the discussion absolutely non technical. But now since we are going to get into exposure, a little bit of technical details have to come in.

Before we start talking about exposure, let me discourse about the focal length of a lens. This will be required while describing aperture. The focal length of a lens is, of course, the distance between the inner lens and the film (or sensor for digital cameras) when the lens focuses on a subject at infinity. The higher the focal length goes, the more magnified the image appears when captured by the camera. more…