Ideal Amateur Birding Setup - D500/500PF vs new combo: A9/200-600

Started 3 months ago | Discussions thread
Bill Ferris
Bill Ferris Veteran Member • Posts: 4,190
Re: Ideal Amateur Birding Setup - D500/500PF vs new combo: A9/200-600

Entropius wrote:

I have the D500 and 500PF.

It's astoundingly good.

The D500 and A9 are roughly equal in pixel count, so it's reasonable to look at equivalent focal lengths and apertures.

The D500/500PF will get you 750mm at f/8.4 equivalent and 1050mm at f/12 equivalent (using a 1.4x TC), both quite sharp.

For exposure, the D500 with a 500 PF (or 200-500), wide open, is f/5.6. Full stop. There is no equivalence conversion for exposure.

The above-quoted text may be in reference to a depth of field equivalence. For wildlife and bird photography, that factor is often irrelevant. The quality of the background is more influenced by the photographer than the gear. A good photographer is selective about backgrounds. If the D500/500 PF combo is at f/5.6 and the A9/200-600 combo is at f/6.3 with good photographers shooting both, I would not expect to see any significant depth of field advantage or penalty in the images coming off either system.

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Bill Ferris Photography
Flagstaff, AZ

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