1DXMKII - Soft Focus & Freezing

[kaihp]

I wonder, assuming there is a relatively common distance I find myself shooting from, if AFMA wouldn't be better done at that distance? Perhaps it's not particularly critical.

Hi Jack,

You're right - if you shoot at a certain distance, the best AFMA would be done at the same distance. However, if that distance is more than the 50x focal length, you most likely won't see much of a difference. If you on the other hand shoot close to MFD, the AFMA may be significantly different (BTDT). Reikan has a good explanation of this behavior in the section "Target Distance" in the Testing Guide pdf file.

 

[East Wind Photography]

Thanks very much Go Wild; I love enthusiasm! I'm working my butt off to learn the 1DX II in spite of my 6D handicap.

East W I sure hope you are wrong since that would seem a big blunder by Canon.

Jack

Not a blunder, just what the STM motor was designed for. Prior to these new camera models, the focus speed setting was not prevalent. Photogs were wanting faster and faster af speeds....then folks complained it was too fast for video and wanted better control.

Again, canon wants you to buy the equipment for your needs....and of course extra equipment for each.

 

[Jack Douglas]

Thanks very much Go Wild; I love enthusiasm! I'm working my butt off to learn the 1DX II in spite of my 6D handicap.

East W I sure hope you are wrong since that would seem a big blunder by Canon.

Jack

Oh dear how do I tell my wife I need to spend more money!

In control systems a servo feedback control system can handle speed variation and that's what I assumed, that there were measurement and feedback parameters that made it controllable. I know a stepper motor is a whole different beast.

Jack

Not a blunder, just what the STM motor was designed for. Prior to these new camera models, the focus speed setting was not prevalent. Photogs were wanting faster and faster af speeds....then folks complained it was too fast for video and wanted better control.

Again, canon wants you to buy the equipment for your needs....and of course extra equipment for each.