Another strange bug with D4, possibly D800!?!?

Started Feb 5, 2013 | Discussions thread
OP Roland Schulz Contributing Member • Posts: 700
Re: question.

lock wrote:

You do not lock the exposure at all? In that case, doesn't the exposure normally change as soon as you let go of the focus lock? The camera uses the scene under the focus point in almost every metering mode to calculate the exposure. Because a new area under the focus point chosen by yourself now appears, the metering will change the metering.

I didn´t find why the camera should lock the exposure. The configuration for the AF-ON button is "AF lock only" under a8. So no exposure must be frozen or influenced.

The strange thing is that when I lock focus holding the AF-ON button, then recompose to a darker area e.g., the exposure is indicated to change for longer shutter time in A mode, but when I let the AF-ON button go there the exposure changes even further, to an even longer shutter time. After letting the AF-ON button go it´s the right exposure/shutter time for the scene.

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