Alley in Pisa, Italy

by Lars Kotthoff

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GIMP (GNU Image Manipulation Program) is an open source, and freely distributed piece of software used for photo manipulation and retouching.

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6
votes
1answer
259 views

How do I effectively split an outdoor image across an uneven horizon in Gimp?

I'm looking to take an image looking out at a storm in the distance that has a fairly uneven horizon due to trees and a foreground fence post and only increase the contrast and decrease the brightness ...
2
votes
1answer
421 views

Why do my photos get much smaller when sending .cr2 files from ufraw to gimp?

I am using ufraw to open .cr2 raw files in gimp, but I'm experiencing a strange issue. The .cr2 files are some 7Mb large. A typical dimension could be, for instance, 2374x1591, as reported by my ...
9
votes
2answers
645 views

Is there an easy way to select by histogram range in GIMP?

The other day I was wondering if there is an easy way in GIMP to choose the pixels that are part of a selected range on the histogram.
13
votes
1answer
1k views

Can the effects of a polarizer be replicated in post-processing?

According to my knowledge Polarizing filters are mainly used to make sky appear more bluish in the day sunlight which gives more dramatic effect to your pictures. I don't have polarizing filters yet ...
2
votes
1answer
1k views

Anyone know of a PS filter that's equivalent to the Retinex filter for GIMP?

The closest I've found so far are a couple from Topaz Labs. They're not quite the same though. Retinex is awesome. Especially if the environments in which you shoot lead to lots of underexposures.
25
votes
9answers
1k views

How do I move my post-processing beyond Picasa?

Over time I've become fairly skilled in using Picasa to do post-processing starting with NEF files, but I'm thinking it's time to step it up a notch, and explore what I can do with a more ...