On Nov 8, 2010, at 6:55 PM, Godfrey DiGiorgi wrote: > On Mon, Nov 8, 2010 at 2:25 PM, P N Stenquist <[email protected]> wrote: >> Boris asked me to provide a direct comparison. So here it is. One pic each >> of the same scene from each camera, shot off a tripod with the DA* 16-50 at >> f5.6, 1/60th. (Both meters agreed on that exposure.) The FOV varies >> slightly, because I turned the zoom ring a bit when removing the lens from >> camera one. The K-7 pic is 22mm, the K-5 is 21mm. In addition to one shot >> from each, I've combined the two images for direct viewing of both at once. >> I've sized the jpegs slightly larger than my normal web pics for better >> detail viewing. Both are raws, converted with the default settings of my ACR >> softwre. >> >> The scene is a cluttered part of my basement, with illuminated ( and >> dusty:-) foreground objects and deep shadows in the background. In the >> shadows are some white surfaces that readily show noise. There's also a hot >> highlight in the background -- a light reflected in a mirror. Ugly pics, but >> telling examples. Note that the K-5 renders colors warmer and, as Boris >> suggested earlier, the unprocessed pic appears to have less contrast. >> >> K-7 image: >> http://photo.net/photodb/photo?photo_id=11920154&size=lg >> >> K-5 image >> http://photo.net/photodb/photo?photo_id=11920153&size=lg >> >> Both together: >> http://photo.net/photodb/photo?photo_id=11920155&size=lg > > Are these both in-camera JPEG examples? or raw files that you > processed? The K5 is indeed an impressive improvement in any case.
These are raw DNG files processed at the default setting in ACR, which is identical for both. > > I did a series of casual ISO tests for the Oly E-5, with the camera's > JPEG engine set to the factory defaults. Reviewing the EXIF, I noted > that the factory defaults included Olympus' noise filtering at > "Standard" strength, so I made another set of four exposures exploring > ISO 6400 at Noise Filtering OFF, LOW, STD and HIGH settings. Might be > an interesting comparison ... reduced size and full resolution files > are available at: > > http://www.gdgphoto.com/Olympus_E-5-ISO_check/ > > (I'm currently processing the E-5 raw files as E-30 files in > Lightroom. The camera calibration is off some so I don't think it's > appropriate to show raw image renderings until Adobe includes E-5 > support ... but Olympus' JPEGs are really quite good straight out of > the camera.) > > -- > Godfrey > godfreydigiorgi.posterous.com > > -- > 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.
