Usually I use the manual focus mode to prefocus first and use as zone focusing for street photography, however, the focusing ring is easy to alter so the prefocus always shifted from time to time.
I read a post in dpreview (http://www.dpreview.com/forums/thread/3485783
) that instead of the M mode, I should use the AF-S and AFL to prefocus, so the ring does not matter at all. It works, however, in the LCD does not have an indicator of AFL being enforced, which is quite strange.
Do you guy also use AFS mode this way?
Or other method to lock the focus in manual mode?