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

Started Nov 30, 2010 | Discussions thread
Philip Goh Regular Member • Posts: 447
Re: Canon 5D, 5D2, 7D vs Pentax K5 noise and DR comparision

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.

Unless I'm misunderstanding the plots, at ISO 1600 the K-5 starts from -0.7 EV to -7.5 EV, which gives it 6.8 stops of DR. The 7D starts from -2.5 EV and goes to -7 EV, for 4.5 stops of DR. From -2.5 EV to -7 EV, the K-5 and 7D have the same SNR, but from the graph it looks like the K-5 has higher DR even at ISO 1600 compared to all the other cameras.

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