Re: Pre-order: Sony FE 200-600 f5.6-6.3 G OSS ($1,998)
arbitrage wrote:
The final variable will be AF. Difficult to test but sounds like it will favour the 1-4 at least in the extreme use cases.
I’d like to hear from the new owners how it balances in the hand and impressions on Af compared to the 100-400/TCs.
AF performance vs 100400GM on a9
AF modes: Wide & Tracking: Wide
Short answer: I agree 100% with Alex Phan assessment, I am in the 5% that want the best AF performance, so this lens isn't for me. I just finish returning to the retailer after a morning AF session with 1.4x, 2x teleconverters on Galah BIFs (cockatoos) (didn't test naked lens AF since I wont be using as naked lens).
Long answer: Main reason for returning the lens is the AF acquire speed&responsiveness isn't that great with teleconverters (with 2x is pretty bad when subject is 1/3 filled in frame and moving fast across the frame). Galah bank quite erratically when they are approaching to land on the ground, the AF acquire speed just isn't fast enough to grab it b4 I could response by panning to keep it in frame.
I imagine Swallows BIFs will be a very good test to see the AF performance b/w 200600G & 100400GM, and I can confidently say 100400GM will acquire the subject faster with teleconverters vs 200600G.
Another good AF comparison scenario will be motorsports, F1 & motoGP, cars/bikes coming out of fast corners where you don't have the luxury to acquire focus & track (fast moving subject across the frame) using Wide AF mode. F1 examplemotoGP
Moreover, I also experience AF not as reliable (drop subject or fail/slow to acquire subject) when subject is approaching MFD.
Jul 27, 2019 at 02:21 AM
Previous versions of iamso78's message #14925769 « Pre-order: Sony FE 200-600 f5.6-6.3 G OSS ($1,998) »
