Tom, You're right, the K7 images have a lot of noise when you use JPG.
Shooting RAW, they have much, much less, and it cleans up well with LR3. http://photo.net/photos/RickW --- On Wed, 8/24/11, Tom Cakalic <[email protected]> wrote: > From: Tom Cakalic <[email protected]> > Subject: Digital Camera Noise Testing > To: "Pentax-Discuss Mail List" <[email protected]> > Date: Wednesday, August 24, 2011, 6:59 PM > It's occurred to me that many digital > camera tests including the most > popular sites do not give an accurate representation of > noise > generated by the camera sensor(s). > > While they may do a fairly decent job of reporting on noise > at a given > ISO, there seems to be no accounting for length of > exposure, length of > continous camera operating time, ambient temperature, or in > the case > of night shots, shadow noise, which is far more obvious, > than noise > say on a light blue British postage stamp... all of which > should > affect noise levels. > > I attempted a series of 10 10-sec exposures @ ISO 800 last > night with > the K-7. Ambient temperature around 60 degrees F. I had > noise > reduction turned off. The camera had been operating for > < 3 minutes > before starting. > > First the camera gave up taking the shots after 5 exposures > because I > only allowed a 1-sec interval between shots. However I was > mortified > at the amount of noise present, which was totally out of > line with > examples seen on dpreview. I'll try again tonight with NR > on. > > Thoughts? > > -- > 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. > -- 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.
