| Joined: | Thu Apr 19th, 2012 |
| Location: | United Kingdom |
| Posts: | 4435 |
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All I can recommend is a D500 (not D850) with a Nikon 200-500mm.
The D850 AF points do not cover the whole screen so it does not seem to be as efficient at tracking BIF.
I hear what you are saying but in my case, the birds are rarely near the frame edges (due to them being further away than my focal length can overcome), so wider coverage of sensors wouldn't help.
The problem I have is the first image in the bracketing sequence is locked on ok but reviewing the full sequence reveals the AFC hasn't kept up with the birds circulating flight path.
I think its the use of the Nikon 1.4x III teleconverter because the AFC performs ok on the D500 with the 500mm lens on its own.
Will have another go tomorrow. I just couldn't believe that AFC stopped during bracketing but thought I would ask.
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Eric