Getting down to the nitty-gritty about noise and it's effect on IQ Locked

Started Apr 15, 2010 | Discussions thread
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OP Crocodile Gena Senior Member • Posts: 1,017
I just took a look, and...

Steen Bay wrote:

Isn't it a fact that 50D, and even more so the 7D, have better high ISO (3200+) performance than 40D when compared at the same scale? (e.g. 8mp like DxO does) And isn't that because 50D and 7D have less per-area read noise than 40D? (since all three cameras have pretty much the same QE)

...the differences between the three (40D, 50D, 7D) in terms of sensor performance were all but insignificant: (appareil1) 329%7C0 (appareil2) 267%7C0 (appareil3) 180%7C0 (onglet) 0 (brand) Canon (brand2) Canon (brand3) Canon

except for low-light ISO where the 7D enjoyed a substantial advantage (854 vs 696 for the 50D and 703 for the 40D), and that's because it does have significantly less read noise than the other two. However, the 40D and 50D were about as identical as you could hope to get.

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