Another Mystery From Pentax

Started Sep 1, 2012 | Discussions thread
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Joseph Tainter
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Another Mystery From Pentax
Sep 1, 2012

Here are Popular Photography's noise data, up to ISO 3200, on the K-5 and the K30, which have the same sensor:

ISO K-5 K30

100 1.3 1.0
200 1.5 1.3
400 1.9 1.6
800 2.2 2.5
1600 2.7 3.9
3200 3.4 4.4

(Incidentally, I formatted this table nicely, but I see in Message Preview that Dpreview ruined my nice formatting.)

So Pentax improved noise slightly up to ISO 400. But above that, noise is worse on the K30. The difference is particularly noticeable at ISO 1600 and up.

Any thoughts on why Pentax did this?

Joe

Pentax K-30 Pentax K-5
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