hey vinz, I gotta play with the GM, have it right now. Very impressed at how it handles spectacular highlights, like a champ. Contrast is fairly high wide open. AF noise a non issue, it sounds like a motor drive rather than metal. I've had a lens that sounded like this, just cant remember which one. Only tested eye focus on my daughter, drool worthy feature for this sort of lens.
Sony A7siii/A7iv/ZV-1 - FE 24/1.4 - SY 24/2.8 - FE 35/2.8 - FE 50/1.8 - FE 85/1.8 - F 600/5.6 - CZ 100-300 - Tamron 17-28/2.8 - 28-75/2.8 - 28-200 RXD
Panasonic GH6 - Laowa 7.5/2 - PL 15/1.7 - P 42.5/1.8 - OM 75/1.8 - PL 10-25/1.7 - P 12-32 - P 14-140