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.
