Originally posted by rawr Hi all.
From the DXOMark.com stats I've compiled a chart (see below) showing the relative performance of these Pentaxes visavis other APS-C sensors and current full-frame DSLR's.
What does "Score" mean? There are no units - is it S/N, grain size distribution, max grain size . . . what? Are these "data" for RAW images or processed ones?
I've just noticed in the latest issue of CR, both the D90 and D300 are described as having "Max. ISO with best quality" at ISO 3200, yet the "Score" for the D300 is marginally lower than that of the Canon 50D (which CU judges to be effective only to ISO 1600), much lower than that of the D90 and only slightly higher than that of a K20D (which CU judges to be effective to only ISO 800). Should "Score" then be on a log scale?
I'm not arguing about the relative merits of the cameras, CU certainly is saying for low light shooting, Nikon's got everyone else beat (at least for JPEGs from the camera). I just need a definition of "Score".
Thanks,
Jer