backdoorhippie Offline Upload & Sell: Off
|
The idea is that if AF isn't grabbing your subject then without MO you would have to switch to Manual before you could properly achieve focus on your own, particularly if you're not using back button focus since the shutter button would once again try and acquire focus for you. With MO a turn of the focus ring will disengage the AF function temporarily allowing you to focus manually without changing the switch on the lens. I don't use it, but I can see its usefulness.
How much of a turn is necessary to override it is a setable parameter if you have the USB dock. I suspect those who use it a lot would want it set for less of a turn where those who do not would want the turn to be larger to prevent accidental invocation.
|