D4 Firmware 1.1 update and trap focus

Started Mar 24, 2014 | Discussions thread
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D4 Firmware 1.1 update and trap focus
Mar 24, 2014

I have been reading that this change is for trap focusing.

Firmware 1.1 update:

· When AF-ON only was selected for Custom Setting a4 (AF activation) and the AF-ON button was pressed to initiate autofocus during viewfinder photography, focus remained locked even after the user took their finger off the button, and the shutter could be released at any time. However, specifications have been modified so that the shutter cannot be released under the following conditions if the camera fails to focus.

· Autofocus mode is set to AF-S (single-servo AF)

· AF-area mode is set to Single-point AF

· Custom Setting a2 (AF-S priority selection) is set to Focus

So how exactly does one get this to work?

Set the settings with the 3 things described above than press the AF-ON to focus on the spot that you expect the subject to cross and release the AF-ON and keep the shutter pressed? When the subject crosses the point the shutter will fire?

Nikon D4
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