I've put up four recent shots taken with the *ist D to demonstrate what I had earlier mentioned regarding a perceived metering anomaly.

The first three are badly overexposed. Exposure data is listed with the photo. All were taken within a 60 second time span. All were taken with multi-seg metering and Shutter Speed Priority AE mode. Image one was shot at the exposure values the camera calculated for a 1 sec exposure with no EV compensation. Realizing image 1 was overexposed, I adjusted EV -1.0 for image 2, and EV -2.0 for image 3. Not understanding the results I shot image 4 at much different settings with no EV compensation and the image is properly exposed.

Two basic issues:

1. Why the gross overexposure at slow shutter speeds?
2. Why was there not a visible difference between images 1,2,3 (especially 1 and 2) when using EV compensation?


http://www.photo.net/photodb/presentation.tcl?presentation_id=253048

Tom C.




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