I really don't care much what Google has heard of. I just want to see
what the issue is.
Mark !
Kenneth Waller
http://www.pentaxphotogallery.com/kennethwaller
----- Original Message -----
From: "Godfrey DiGiorgi" <[email protected]>
Subject: Re: Pentax K-Q adapter and an OT rant about corporate silliness
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)
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