2 serious bugs with 3D tracking and metering

Started Dec 1, 2007 | Discussions thread
OP jp Senior Member • Posts: 1,151
Ok, here is an example

KennyKB wrote:

jp,

just out of curiosity, how do you know matrix is not following the
initially selected AF point? I don't have a D300 yet so excuse my
ignorance if the answer is obvious.

Please don't worry Kenny, there are no stupid questions, only stupid answers, and I usually try to avoid giving those unless people start to get nasty because they can not stand criticism of their gear.
To make the simplest example:

take a scene with on the left and right a dark part and in the middle a gright part
Position the af point in the middle and meter (over the dark part)

Do not change framing but place the AF spot (on a side AF point over the bright part)
The two situations wil meter exactely the same in 3D tracking mode.

If you do the same but without 3D tracking mode, the metering changes to reflect the subject brighness under the AF point.

It does not matter what other mode you use (AF-C, AF-S combined with dynamic AF or single AF, it always works correctly, except in AF-C mode with dynamic 3D tracking.

Hope this makes things clearer for you and anyone else who did not get the whole picture of this probable issue.

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