Re: [Gimp-user] Suggestions for RAW workflows

2006-05-25 Thread Alexander Rabtchevich
The jpeg image you get from your camera depends on in-camera sharpening 
and noise reduction algorithms. If you look through camera comparisons, 
f.i. at dpreview.com , you'll see that different manufactures have 
different visions of this balance. Some of them prefer less aggressive 
noise reduction (Panasonic), some more (Kodak). So an jpeg image from 
Kodak camera looks smoothly with less noise, but with less details.


When you convert image from RAW with UFRaw, you get it closely to "as 
is" from camera matrix. Afterwards you can apply sharpening or/and noise 
reduction. Noise reduction plug-ins can be found at

http://www.haypocalc.com/wiki/Plugin_Gimp_GREYCstoration
or any other from the page
http://registry.gimp.org/list?category=10

I'd recommend you selecting some "critical" parts (like faces) before 
applying noise reduction with greycstoration, overwise it would take a 
lot of time and memory.





--
With respect
Alexander Rabtchevich
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Re: [Gimp-user] Suggestions for RAW workflows

2006-05-25 Thread Tim Jedlicka
On 5/25/06, Shawn Willden <[EMAIL PROTECTED]> wrote:
First, the ufraw plugin, and the dcraw program, seem to fall down in onerespect:  my converted images are often much noisier than the JPEGs producedI've been happy with dcraw and ufraw, however I haven't noticed or had noise problems. I have been running the latest version (ufraw 
0.8.1). So my only suggestion is to make sure you are running the latest and greatest.Thanks to Stephen's suggestion I did take a look at Bibble. Nice to see a Linux app. It also appears to encourage GPL plugins. 

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Re: [Gimp-user] Suggestions for RAW workflows

2006-05-25 Thread Stephen Norris
On Thu, 2006-05-25 at 13:56 -0600, Shawn Willden wrote:
> So, are there any other RAW photographers who use Linux or *BSD and want to 
> share their photo processing workflow?
> 
> Thanks,
> 
>   Shawn.

Here's mine.

1) Copy images using a python script into datestamped (from the shooting
date) directories.
2) Back-up images to DVD or CD.
3) Open BibblePro and use it to do almost all post-processing. This
includes Noise Ninja for noise reduction as well as sharpening and lots
of other things. See http://bibblelabs.com/ My first step is to cull out
obviously bad shots, then go from there.
4) For a few things (mostly perspective correction) I then load the
images into The Gimp.
5) Finally I file the images (originals and any JPEG/TIFF versions) in
f-spot.

Hope that helps. I spent a long time mucking around with various
plug-ins in the Gimp for reducing noise without ever achieving anything
half as good as Noise Ninja in Bibble does.

Stephen

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[Gimp-user] Suggestions for RAW workflows

2006-05-25 Thread Shawn Willden
Hi,

This isn't strictly a GIMP question (although the GIMP may well be a component 
of the solution), but it seems likely that some of the people here will have 
some good ideas.

I'm experimenting with various approaches to turning my RAW images into 
high-quality TIFF or JPEG files for printing and/or on-screen viewing, and 
I'm looking for suggestions from others who are doing the same thing on 
Linux.

So far, I've found that using GIMP and the ufraw plugin, I can get conversions 
that are fairly nice in most respects.  Manipulating the exposure and the 
curves in the ufraw dialog even allows me to take advantage of the greater 
contrast that the RAW format captures, compressing or stretching the dynamic 
range prior to converting to 8-bit color depths so that highlights aren't 
blown out and details aren't lost.

There are a couple of problems, though.

First, the ufraw plugin, and the dcraw program, seem to fall down in one 
respect:  my converted images are often much noisier than the JPEGs produced 
by the in-camera processing.  I shoot in RAW+JPEG so I have both, and in some 
cases I've been able to get a better final image out of the JPEG than the 
RAW, simply because of the noise issue.

I have found that the GIMP 'selective gaussian blur' can be used to get rid of 
much of the noise, but it has to be used very carefully to avoid losing too 
much detail or distorting portions of the image.  I'd like to find a 
less 'fiddly' solutuion.

The second problem is that I'd like to print some of my images in relatively 
large sizes (11x14 or so), and it seems to me that if I want the best quality 
possible, it's not a good idea to convert to 8-bit color.  Of course, that 
rules out using the GIMP to clean up noisy areas, since it doesn't yet 
support higher bit depths.  Cinepaint doesn't have the selective gaussian 
blur filter, nor does ImageMagick.

So, are there any other RAW photographers who use Linux or *BSD and want to 
share their photo processing workflow?

Thanks,

Shawn.
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