12-17-2015, 08:41 AM
I'm sorry Dave, I can't confirm your findings and I'm using Nikon D750 as well. It is the best AF Nikon has, but the 3D mode in dark situations is not that far away from useless, especially if the lighting is not constantly. Tough job for any AF, I know - but unlike me, a mirrorless can still show me without hesitation a loupe and let me decide where the focus should be. With amplified light as well, because the EVF can help more than the (in this case) useless matte screen.
I also can't confirm the calibration values. Mine (on two bodies) spread much wider. Also, please keep in mind your calibrating is valid at one distance only - other distances can be different. If you don't believe - try. And at one zoom position - other positions... you get the idea. I spent quite some hours in calibrating around ten lenses, on sometimes 4 different bodies. And if a body went into repair because of some issue Nikon screwed up, I had to recalibrate again. Im FED up with that crap and my patience with DSLR promoters goes to zero. Not because "mirrorless is better" - on this calibration work I really could save a lot of time. It would be fine, if the keeper rate was beyond each discussion, but mine is not. You guys still think about each AF point is of equal quality and works equally to all the others and a lens has a perfect plane you can focus on, no field curvature no matter what. There are so many sources for focus issues that it's a miracle how often it nails it. Glad you're happy, so you have the perfect combination already. Please keep in mind, others struggle in other situations with the same combination. And, if you want to get another impression, walk around with a fast, calibrated lens and shoot only at f/1.4. That could change your view quite a bit. It's so easy to say AF is fine if I use f/4 or slower glass. 5 lenses tell me different things...
With BIF you sure have more experience and coming from a struggling system like Pentax is an advantage because you surely developed some failsafe techniques. The keeper rate of my BIFs is pretty low. One reason is, I still can't predict what will happen next.
So far not many know how mirrorless behaves behind a long lens which is designed and adjusted for DSLR, it depends on adapters and the colaboration between them, the lens and the body. Also, to operate a overly complicated menu like Sony created is a PitA of it's own mark. Not getting a shot although I could get it if I wouldn't get lost in a poorly designed menu is in it's result equally to not getting a sharp shot because AF sucks.
I also can't confirm the calibration values. Mine (on two bodies) spread much wider. Also, please keep in mind your calibrating is valid at one distance only - other distances can be different. If you don't believe - try. And at one zoom position - other positions... you get the idea. I spent quite some hours in calibrating around ten lenses, on sometimes 4 different bodies. And if a body went into repair because of some issue Nikon screwed up, I had to recalibrate again. Im FED up with that crap and my patience with DSLR promoters goes to zero. Not because "mirrorless is better" - on this calibration work I really could save a lot of time. It would be fine, if the keeper rate was beyond each discussion, but mine is not. You guys still think about each AF point is of equal quality and works equally to all the others and a lens has a perfect plane you can focus on, no field curvature no matter what. There are so many sources for focus issues that it's a miracle how often it nails it. Glad you're happy, so you have the perfect combination already. Please keep in mind, others struggle in other situations with the same combination. And, if you want to get another impression, walk around with a fast, calibrated lens and shoot only at f/1.4. That could change your view quite a bit. It's so easy to say AF is fine if I use f/4 or slower glass. 5 lenses tell me different things...
With BIF you sure have more experience and coming from a struggling system like Pentax is an advantage because you surely developed some failsafe techniques. The keeper rate of my BIFs is pretty low. One reason is, I still can't predict what will happen next.
So far not many know how mirrorless behaves behind a long lens which is designed and adjusted for DSLR, it depends on adapters and the colaboration between them, the lens and the body. Also, to operate a overly complicated menu like Sony created is a PitA of it's own mark. Not getting a shot although I could get it if I wouldn't get lost in a poorly designed menu is in it's result equally to not getting a sharp shot because AF sucks.