Is that the vI, II or III 600 mm? Those are incredibly sharp with the 2x extender. I have the 2X extender (version III I believe) and 600 mm F4 vII. If I can get that sharp at those ISOs and shutter speeds I will be ecstatic!
Bob
IIRC, he has vIII and all the latest toys.
Jul 30, 2020 at 11:44 PM
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