Hey Doc. How's it going?
There are plenty of conclusions to be drawn about aperture when phtographing birds. They don't sit still very long and because of it, light quality changes rapidly. However, your rule of thumb works for the most part. This next shot is a crop (if I recall correctly). The bird is more in focus but F2.8 covers the entire bird because of the increaseed DOF at that distance. I was lucky that he was pretty still while on the ground. He was only yards away from the tree but in an open area with more light. The challenge is that I am trying to max shutter speed with a big lens mounted on a monopod. Between rotating the lens from portrait to landscape, checking shutter speed, then ISO, I usually tend to miss a critical element. More practice and luck is required.
O1af,
That is exactly what I has in mind. Excellent work and it really improves the image. I need a tutorial in PP.
Birma,
Depending on where you live, there probably are many raptors on the golf courses. Golf is how I became interested in photography. Either one is a great use of my time.
