Overexposure problem with EOS 500D

[xding]

Dear all,

I just changed my EOS 450D to 500D yesterday (I am still in time to return the 450D) for the HD video feature in 500D.
However, I ran into the picture quality problems with 500D. I have just taken a few shots and I found that there is a quite significant overexposure problem.
With 450D there was also such an issue, but not that often.

I use the standard kit lens. (EF-S 18-55mm IS) is it a problem of lens or 500D? b.t.w. I've had the same lens with 450D.

It just seems that 500D has its very own understanding of exposure. And often if I just shift the focus of the image a little bit I've got a complete different exposure.

I don't know how to correct the overexposure.

Here are two photos taken in exact same lighting conditions. With slight shift in the x-axis, I've got very different exposure.
Overexposed Budda
http://expressinbits.files.wordpress.com/2009/11/img_0500_2.jpg
And the same Budda under the same settings and lighting conditions:
http://expressinbits.files.wordpress.com/2009/11/img_0501_2.jpg

(you can find these photos on my blog http://expressinbits.wordpress.com/2009/11/14/eos-500d-overexposure-problem/)

[Bob Atkins]

If you change composition, you may well change exposure because you change the distribution of light and dark areas in the frame. Evaluative metering does it's best to try to figure out what you're shooting and which parts of the image are most important, but it's not perfect. There may well be a small difference in the metering pattern of the 450D and 500D.