sharpness 600mmf4

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  1. A

    Is this photo Critically Sharp and if not Why? :)

    This was a nice overcast morning in Mill Creek WA. Great Blue Heron preening in the Penny creek. I have a bunch of other photos at lower shutter speed, but this one is what I'm wanting an opinion on. Is this photo "critically sharp"? And what happened? Z9 + 600mm TC f/4 lens Gitzo 45 series...
  2. V

    600 mm f/4G ED sharpness issue

    Hey all, I'm having some sharpness issues with my Nikon 600 mm f/4G ED, I thought I would reach out to people way smarter than I am for some help. Let me explain, I have it mounted to my Nikon Z9, the images are completely unusable, and it's hard to describe what the issue is. they seem noisy...
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