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Message: <blockquote data-quote="stephenB" data-source="post: 1544626" data-attributes="member: 23668">I had no idea that this post would stir up quite such strong emotions! All I was trying to point out was that my quantitative and fully objective measurements appeared to show that the noise levels on the 50D were surprisingly high (to me), being somewhat poorer than what you would expect on the basis of photon counting statistics if you took the 350D sensor and doubled the number of pixels. The finding that DPP processing of raw files seems to reduce the noise on the 50D compared with PSE6 and ACR was also surprising to me, and suggests that maybe this should be used by others concerned with comparatively high noise on the 50D. But the improvement was not that large!Finally, the 50D does have one key feature that the 40D lacks, and that is microAF adjustment. This was the main point of switching to it, due to marked back focus errors on my 40D + 400mmf4 DO when used with a x1.4TC (but not without it). But that is another story, possibly for another thread in due course!</blockquote>