How many Focus Points do you use?? Experiences...

Oh goodness. I tend to use focus-recompose, but that article posted by cosworth (entitled "Why Focus-Recompose Sucks", for anyone who hasn't read it yet) is a real eye-opener. I too would like to know whether someone can confirm or rebut it. And I think I'll be photographing some brick walls soon...

<Edit>
I thought this was worth 'escalating' to catch more readers' attention, so I started a new thread:
Focus-RTecompose is fundamentally unsound...?

The reasoning in the article is unquestionable. Your distance will vary as much as the cosine of the angle you move the camera. However, it will be very seldom that you will make such an extreme recompose. In the case he cites, the angle is aprox 15º which is indeed large. You may see this in the radical recomposing he presents in the diagram.

On the other hand, for a 50mm lens at a rather large aperture (f/2.0) and at this distance (6.5 feet), DOF is 1.8 inches so it (barely) covers the difference. In these extreme conditions, you should use manual focus.

My photographic experience is very shallow, this is only math.

Julio