I really don't care much what Google has heard of. I just want to see what the issue is.
Sorry, trying to look at a JPEG image at this size is just about useless to see "shadow banding" ... I can't see anything from comparing the unprocessed image to the processed one with these tools other than than you rendered the processed one nicely. I don't even see a useful way to move from the first to the second image. Picasa just sucks rocks, IMO. I capture only with raw format, are you capturing JPEGs? That might be the issue. On Sun, Sep 11, 2011 at 10:07 AM, Anthony Farr <[email protected]> wrote: > On 12 September 2011 00:20, Godfrey DiGiorgi <[email protected]> wrote: >> >> I've never seen this "shadow banding" stuff, or at least I don't >> recognize what you mean. Can you provide an example? >> > > You'r very lucky to have never seen it. Google has heard of it. > You'll find plenty of references there. Frank Theriault pointed it > out in one of his pictures a year or two back. > > Here's a photograph with some serious shadow banding: > https://picasaweb.google.com/lh/photo/UZHmptXW4qsffklRS3lX_aAuqTB9pnndhHCi9-Fvgfs?feat=directlink > > Here's my repair: > https://picasaweb.google.com/lh/photo/a75LaelivUllMwgs9RCR56AuqTB9pnndhHCi9-Fvgfs?feat=directlink > > That's about as bad as it gets. The histogram doesn''t show any > shadow clipping, although most of the tonal distribution is towards > the left. Even so, there isn't much room at the right to raise the > exposure. Another stop more would have seen clipped highlights. > > The grain/noise isn't as bad as this suggests, but the resizing seems > to have worsened it. > > You can get a picture to display bigger in Picasa by closing the > information panel on the right. Click on the >> near the top right > corner of the picture. > > regards, Anthony > > "Of what use is lens and light > to those who lack in mind and sight" > (Anon) > > -- > 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. > -- 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.
