On Mon, Feb 15, 2010 at 3:29 PM, P N Stenquist <[email protected]> wrote: > > On Feb 15, 2010, at 3:11 PM, Adam Maas wrote: > >> On Mon, Feb 15, 2010 at 2:35 PM, Dario Bonazza >> <[email protected]> wrote: >>> >>> Adam Maas wrote: >>> >>> >>> I wouldn't expect the K-X sensor in an updated K-7. However there is a >>> 14MP version of the sensor with similar high ISO performance and >>> capable of 7fps, THAT's what I'd like to see in an updated K-7 (it's >>> currently used in Sony's A450 and A550, the K-X shares a sensor with >>> the A500). >>> >>> >>> My reply: >>> >>> I know that, as I've tested the Sony A550 last December. Yes, very good >>> high-ISO performance, but not up to the K-x. >>> So I'd like the Sony 12 MP sensor better, but the Sony 14.6 MP variation >>> is >>> quite acceptable too. >>> >>> Dario >>> >> >> But the A550 and A500 perform nearly identically from everything I've >> seen and the A500 uses the K-X sensor, so I'd expect the A550 sensor >> to perform similarly to the K-X sensor when matched with Pentax's >> processing chain. The K-X's advantage over the A550 is primarily >> because Sony still hasn't figured out NR in the processing engine. > > Which makes me wonder if the Kx reduces noise at the expense of detail. It > would be interesting to see a comparison of resolving power between the K7 > and the Kx at ISO 800. > Paul >
It doesn't much in RAW in RAW, and the ISO it starts to do this is selectable in JPEG. What Pentax has done is severly suppressed chroma noise and gone light on the luminance NR so detail is preserved. The DPReview samples are actually pretty good at showing this. -Adam -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
