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

Started Nov 30, 2010 | Discussions thread
OP _GUI_ Regular Member • Posts: 386
Re: Canon 5D, 5D2, 7D vs Pentax K5 noise and DR comparision

SOB1 wrote:

well, thanks for sharing but if you did not test at least 5 copies of each camera , I must say the test is flawed as with all other sensor tests published.

No problem if the test is a bit flawed as long as it is 100% representative. There are no huge differences in sensor noise between camera units.

how many samples for each body?
if not more than 5 samples , it is useless test.

Depends on body, from 12 to 27. The source data is here: http://www.guillermoluijk.com/download/ruidoyrangodinamico.xls

the ISO 80 of the Pentax is not real ISO 80.

I think it is 100% real (Canon's ISO50 is not). RAW histograms are full of levels and vary according to shutter:

ISO speed: 80
Shutter: 1/13.0 sec
Aperture: f/2.8

ISO speed: 100
Shutter: 1/15.0 sec
Aperture: f/2.8

Cheers!

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