I am fascinated with the forms the snow layers take on at the end of winter!

5 comments so far...

Larry Stamm April 04, 2008, 07:54 PM
This is an attempt both at making a tryptich and converting to monochrome. It was a learning experience, to say the least!
I am not entirely happy with the results, and I had to be careful not to get banding in the greyscale conversion. I think I might install CinePaint and redo the b&w conversion just to compare.
Rolf Steinort April 05, 2008, 11:38 AM
I would be very pleased to hear about your experience with cinepaint. And I think, Joel would be too... ;-)

I think I know where you are not "entirely happy". The snow is too grey - but if you pull the curve higher, you are loosing details.

Have you tried a coloured background for the image? A dark red could work better than grey.

Larry Stamm April 05, 2008, 04:23 PM
My choices in processing the photos, with regards to the snow, seemed to be
1) Have bland, white snow, or
2) Have grey snow with details, or
3) Have white snow with details, but have noticeable grey banding in the snow details.

I chose option 2, but I am not sure if there are ways around the banding problems I had with option 3, or if that is a limitation of working with 8 bits in GIMP.

I never thought about making the background coloured or tinted! That's a good suggestion.

Photographing snow, especially snow in the forest, continues to be a challenge for me.

Rolf Steinort April 06, 2008, 12:08 PM
It is troublesome - I am happy that we have had nearly no snow here in the years I do digital photography.

The problem is the dynamic range of the camera too, not only the 8 bit limit of GIMP.

Did you shoot in RAW? Then you could try to make a pseudo HDR. Develop one image for the sky, one for the snow and one for the wood. And then combine them with masks.

Look at http://meetthegimp.org/episode-025-a-winter-morning/ for how to that if you are not sure.

Larry Stamm April 07, 2008, 04:36 PM
Well, I compiled and installed cinepaint over the weekend (ver 0.22, not the new 0.23). So far, it has not helped my monochrome conversions, but I am confused about whether it is best to use a linear colour space or srgb for this task.

Actually, the whole issue of colour management confuses me. And since I have red-green colour blindness, I am wondering if it is worth the effort to attempt to master colour profiling.

I haven't tried the pseudo HDR route yet, but several other people have also told me this was the best way to process snow photos, so I guess this is the next step.

Rolf, I have learned more about using the GIMP in the last couple of weeks since discovering your podcasts than I have in the past 10 years of blundering about with it. Many thanks!

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