Canon 5D, 5D2, 7D vs Pentax K5 noise and DR comparision

Started Nov 30, 2010 | Discussions thread
ManuH
ManuH Veteran Member • Posts: 3,898
Re: Canon 5D, 5D2, 7D vs Pentax K5 noise and DR comparision

GUI wrote:

Philip Goh wrote:

At ISO 1600 the K 5 performs like any other modern APS-C in the whole range

That's not very accurate. It produces a similar SNR across the ranges covered by other APS-C cameras, but the the dynamic range at 1600 is at least 2 stops better than competing APS-C cameras.

If you look at the plots, at ISO1600 the DR of the K5 is not higher than 7D's DR, and is lower than 5D2's DR. The high DR performance is just for low ISO values. Just look at the SNR plots, nothing else is needed.

Your measurement is close to DXO but not quite. At low ISO, up to ISO 400, the K-5 has 2 stops more DR than 7D. Starting at ISO 400, the 7D lags only by a bit less than 1 stop.

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