If you reread my original post on this subject my question is in regard to the 200-600 ZOOM. A $13,000 600 f/4 should be Pro worthy in anyone’s book.
Goober wrote:
Faster than 600 F4 prime?......who makes that? And I highly doubt you would hand-hold a 600 f4.
I have the Sony fe400 2.8 coupled to an a7iii and autofocus with both the Sony 1.4x and 2x converters is very fast and accurate, and it keeps up with 10 FPS. Optics are superb. Construction is designed for professional use and competitive with Canon and Nikon’s new lenses. I’m sure the 600 f4 will function the same.