2 serious bugs with 3D tracking and metering

Started Dec 1, 2007 | Discussions thread
rondv Contributing Member • Posts: 585
Re: 2 serious bugs with 3D tracking and metering

jp wrote:

rondv wrote:

jp your test is flawed or your camera. I tracked a bird with the sky
as the background and as it flew in front of some trees the camera
continued to track and the exposure changed. AF-C, dynamic area, 51
pt 3d tracking. It works in both manual and av mode and all metering
modes.

The fact that exposure changes should not be interpreted as correct
exposure metering.
If the scene changes, then exposure changes but this dos not mean
that exposure is correct
You must use a static scene and switch AF points to simulate problem #1

http://forums.dpreview.com/forums/read.asp?forum=1039&message=25857992

I did that jp and the exposure changed with the focus point. Whats the point in shooting a static scene in 3d tracking? Now you're stating the exposure does change but is not correct. Why do you think the camera would not give the proper exposure as the focus point and light changes?

jp wrote:

1) If you use ASF-C with 3D tracking then the metering (spot/matrix)
always supposes that the subject is in the middle of the frame
instead of under the selected AF point.
2) As the AF point tracks across the screen, the metering does not
follow the AF point

Now you're changing what you originally posted. I'm not trying to argue with you but you did make the post and I can find no evidence nor did you give any of the problem (?) you stated.

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