Originally posted by marlon Sounds like a plan, but not one im comfortable doing, just like I don't like using spanners as hammers.
Maybe someone else could advise on the wear/tear and feasibility of this?
Well I don't like it but I've used many objects as hammers, spanners included. I don't think I'll do this often, but it surprised me that I'd never heard of it.
Originally posted by jmc7104 Cannot see what difference it would make as far as mechanical wear is conserned. The feaasibility would have to be determined by the user, hiwever I wouldn't want to unlock a heavy lens like a 200 f2.8 or 500 ect. jim
I was just thinking that it would be fairly unworkable with my bigma.
Originally posted by Spongefingers This could be an interesting technique for some people, but I'm not convinced it's really worth doing unless you feel you absolutely have to quick-shift.
The focus driver is retracted when you press the lens release button - so it will almost always be misaligned with the lens focus drive socket after twisting the focus ring manually and releasing the button. So when autofocus is next activated, there will be that unpleasant click and delay.
Also, as the lens mount locking pin is also retracted when the button is pressed, there may be a risk of the lens twisting on the mount when handled (admittedly a remote one.??)
Staying in manual-focus could be just as quick in most circumstances.
I can see using it once in a while... for instance to fine tune focus on the eyes in a portrait. It's true that leaving the camera in MF would be better if you were doing a series of portraits, or had time, but if you just wanted a quick one off adjustment, and wanted to remain in AF for quicker response in dynamic conditions this might be work well.
With most of my lenses, I can't imagine the lens disengaging from the mount while doing this, as the fit is quite tight.