Thanks David. It's the SMC Pentax 85/1.8. I also use the SMC Pentax 135/2.5 quite a bit. Paul On Jan 30, 2007, at 7:43 PM, David Weiss wrote:
> 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 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
