D600: how do you get focus priority to work?

Started Oct 22, 2012 | Discussions thread
OP lock Veteran Member • Posts: 6,200
Tested it tonight.
1

All modes in focus-prioritÿ:

AF-S single servo with the dial in S.
With AF-on, indeed, if at first focus is not achieved, the shutter will not fire. However, once focus is achieved,  it fires once. Than it stop of course.

if AF is not activated, pointing the camera elsewhere (the dot is not or no longer seen in the VF) at any OOF object will cause the shutter fires whe nthe shutter butoon is pressed !! The manual however clearly states the following:

Photos can only be taken when the in-focus indicator (the dot) is displayed.

This clearly is the wrong explanation´╗┐ because without the dot in the viewfinder it also fires.
What they mean to say is: if AF is engaged and focus is aquired with the in-focus indicator (the dot) being displayed, photos can be taken. However, if AF is engaged and focus is not aquired , no photos can be taken.

In other words, the mode neglects the fact that when AF is set on the camera (in contrast to M) if Af is not engaged even objects OOF allows the camera to fire.´╗┐

AF-S single servo with the dial in CL/CH.
With AF-on, indeed, if at first focus is not achieved, the shutter will not fire. However, once focus is achieved, it fires and continues to fire despite becoming OOF.

AF-C cont servo with the dial in CL/CH.
With AF-on, indeed, if at first focus is not achieved, the shutter will not fire. However, once focus is achieved, it fires and continuesto as long as focus can be achieved. If no focus is achieved again, the shutter will not be realeased again. This is the only sensible mode with focus priority.

In any AF mode, I have not been succesfull in seting the AF to a fixed distance (despite AF-L). So focus trap is no longer an option. There is one way out:
You set up AF-C with a background at which no focus can be aquired. If in the foreground an object appears, focus will be achieved if AF is activated . The camera will fire when the shutter button is pressed and as long as the object at stays in focus. Otherwise the camera stops firing.

In M-mode the cam fires off whether I manually get someting in focus or not.

I did not test AF-A.

lock

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