Archived posting to the Leica Users Group, 2009/01/12

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Subject: [Leica] PESO: Winter dreams
From: hlritter at bex.net (Howard Ritter)
Date: Mon Jan 12 17:37:16 2009
References: <2FE9CC31-4F21-45A3-8F2D-466C13AD87F5@bex.net> <898B404D-3B75-4BAA-864F-43B00255B19C@bex.net> <40EA56D31DFB4ACAA4EF3A70FD57AA13@dadquad>

Geoff--

Thanks for your comments and thoughts. I'll have a closer look at the  
originals and especially the histograms. I did a little processing to  
try to decrease the very blue overall tone, and this may have added  
some exaggeration of area-to-area differences. I'll also post a higher- 
quality jpeg version to minimize posterization. This probably would  
have been a good scene, with poor overall contrast, to have shot as  
RAW. Oh, well, the weatherman says an additional 2-4 inches tonight,  
then 3-6 MORE on Weds, so I can perhaps re-shoot the scene....

--howard

Oh yeah. Sensor spots. I noticed.

On Jan 11, 2009, at 11:18 PM, Geoff Hopkinson wrote:

> Howard I quite like the slightly broader view with more of the  
> shapes and
> the curves of the different ice areas.
> As to the central gradient, I suspect that you may have introduced  
> some
> posterisation maybe in your processing? That is some loss of gradation
> smoothness? There are some visible odd fringing artefacts in the  
> larger
> version too, maybe from localised exposure adjustment??? Since you are
> dealing with a LOT of brights there, what was the histogram like? I  
> note
> that you made a manual exposure. You ought to have a gazillion  
> highlight
> tones to manipulate if you have a good filled in right end of that
> histogram. By the way large sizes and plain light tones are pitiless  
> as far
> as revealing sensor spots too ;-)
>
>
> Cheers
> Geoff

In reply to: Message from hlritter at bex.net (Howard Ritter) ([Leica] PESO: Winter dreams)
Message from hlritter at bex.net (Howard Ritter) ([Leica] PESO: Winter dreams)
Message from hoppyman at bigpond.net.au (Geoff Hopkinson) ([Leica] PESO: Winter dreams)