nex 6 & AEL button customization
One more thing - when I say "activate auto focus" I don't mean pressing the button switches the camera to auto focus mode. I mean that the camera stays is manual focus mode but pressing and holding down the button activates autofocus while staying in manual focus mode.
This basically allows me to aim the camera at what I want to focus on, activate autofocus by pressing the af/mf button or manual focus if it's low light - and wait for the subject to look interesting or do something that I want to capture and press the shutter button as many times as I want without the camera trying to refocus. The other benefit is that I can focus and wait and not hold down any buttons or do some complicated thing while I wait for the scene to be shot worthy..
I'm able to do this with canon, nikon and olympus dslrs and hack it with the nex 7.