04-01-2014, 10:53 AM
Even with very bright screens is the AF module in low light conditions superior in speed and accuracy with a lens wide open. In the same conditions, I never focus faster or as accurate. Although I changed the D800's screen to a microprism version, but I noticed a slight difference in focus accuracy. Also, I appreciate very much the using of the outer AF points - and with each focusing screen I would depend on a simple matte screen. I had that on Medium format and it is not easy or remotely fast to use.
I would never buy a MF only lens. Due to manufacturing quantities they won't be much cheaper than good AF lenses - or they already are, like Samyang / Rokinon. Or they are much more expensive, like Zeiss Otus.
Changing the motor in a car will not be a big improvement unless the rest of the car can handle the higher performance. And I don't see any modern focus screens being as accurate as a well (fine)tuned AF. If I want MF, I prefer the damped rings if the Sigma Art series about the far too easy moving rings of "normal" Nikkors. They remind me to the stickiness of Zeiss in the old Yashica/Contax days.
I would never buy a MF only lens. Due to manufacturing quantities they won't be much cheaper than good AF lenses - or they already are, like Samyang / Rokinon. Or they are much more expensive, like Zeiss Otus.
Changing the motor in a car will not be a big improvement unless the rest of the car can handle the higher performance. And I don't see any modern focus screens being as accurate as a well (fine)tuned AF. If I want MF, I prefer the damped rings if the Sigma Art series about the far too easy moving rings of "normal" Nikkors. They remind me to the stickiness of Zeiss in the old Yashica/Contax days.