Which lens is that Paul? Very nice ice pictures, btw. Dave
Paul Stenquist wrote: > BTW, I shoot with K lenses quite frequently. No problem. > A couple of recent examples: > http://www.photo.net/photodb/photo?photo_id=5458250&size=lg > http://www.photo.net/photodb/photo?photo_id=5458281&size=lg > On Jan 30, 2007, at 7:00 PM, David Weiss wrote: > >> Hello, >> >> Well, the other day I decided to take a look at this k lens >> underexposure issue (which appears to be a real problem) and instead >> found another problem. Here are the pictures: >> >> http://www.flickr.com/photos/[EMAIL PROTECTED]/ >> >> This is a series of pictures of a white piece of tissue used to wrap a >> Christmas gift. Light was natural, white balance manually set. >> Updated >> firmware. Obviously, many of these are 1 or 2 stops underexposed, >> but, >> I was startled at the bands of color (green to the left, magenta to >> the >> right). >> >> Photos 1-3: Three is probably close to being exposed properly, but it >> still has a hint of the problem. The others show it clearly. >> >> Photos 4-6: So I decided to look at photos that were overexposed at >> different f stops. I don't see the problem in 4 and 5, but it >> shows up >> again in 6. >> >> Photos 7-9: So I thought to change lenses. Still there on 9, small >> aperture again. >> >> Photo 10: Might as well check the problem at 400 sensitivity. A hint >> of the problem. >> >> Photo 11: There it is again. >> >> Seems that the combination of high sensitivity, small aperture and >> underexposure causes the problem. >> >> I also tried RAW and normal instead of bright mode, this did not cause >> the problem to be eliminated. >> >> So, is this just the infamous banding problem magnified a bit? >> >> Is this just my camera? I hope someone can verify for me that this is >> just a characteristic of this camera. Not that this would thrill me, >> because I expect something to work properly, but at least I wouldn't >> send my camera in again. >> >> I know that I am not likely to shoot under these conditions, but it >> would be nice if the camera worked properly just the same. >> >> Dave >> >> >> >> >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net > > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
