In an attempt to steer the bull back onto the righteous path of Pentax talk...
I saw another comparison a few weeks ago: http://falklumo.blogspot.com/2009/06/comparative-noise-study-k-7-vs-k20d.html and was surprised that Falk concluded the K20D had slightly better high ISO noise. I say surprised because I looked at the images he posted and I concluded that I liked the K-7's performance better. Looking at Max's pics Joe linked to, I find the K-7 shows better control of the luminance noise at the expense of chroma noise. So better details for the K-7 at the expense of magenta blotches. Does the K-7 have adjustable NR? I seem to remember it did. If so, then there is probably a setting (mid or high NR) on the K-7 that will give you images like those out of the K20D. As somebody who does a lot of B&W, I always want higher resolution at high ISOs rather than controlled chroma noise that kills details (like I've seen on the Nikon D80 at high NR). But back to the comparison; Like Jostein, I also see the K20D shots are underexposed compared to the K-7. If all exposure values on-camera were equal, this means the K-7 boosts the signal more than the K20D. I would like to say this means it converts photons to electrons more efficiently, but I don't think the chroma noise would support this hypothesis. Another concern is that these images show different behaviour in the K-7 when compared to those by Falk (in the link I posted above). The chroma noise is much better controlled in Falk's camera, and while his K-7 also exposes a bit brighter than the K20D, the difference is much less than in Max's test. Anyone care to comment whether they see the same I do? But more importantly: Do we really care? After all, the K-7 is new and cool, and chicks dig it. That's why we all got into photography, right? :-) --M. -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- http://www.EnticingTheLight.com -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- 2009/7/25 William Robb <war...@gmail.com>: > > ----- Original Message ----- From: "Joseph Tainter" Subject: Re: K20D vs. K7 > High ISO Noise Comparisons > > >> "Unfortunately, the current first place team is the Yankees." >> >> I suppose I should be grateful that this stayed on topic for a few posts. >> > > Ya think? > > William Robb > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
