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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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9
votes
1answer
3k views

What is the easiest way to alter white balance in Gimp?

Let's say I've accidentally shot my pictures on "sunny" white balace when I should have used "shade". What is the easiest way to warm the pictures up a bit in Gimp? The "Colors/Color balance" tool ...
13
votes
2answers
2k views

How does the Curves tool work in GIMP?

I started using GIMP recently, and came across an option called Curves under the Colors menu. What does this tool do, and how do I use it correctly? I get some good colors if I make a graph in 'S' ...
0
votes
1answer
1k views

Is there an installer for the Windows version of the latest Resynthesizer plugin for Gimp?

From here : http://registry.gimp.org/node/25219 !!! The attached executables are Linux files. DO NOT download them for Windows. Also do NOT download the Python scripts for Windows (they won't ...
8
votes
1answer
1k views

If I assign a profile to my monitor in Gnome Color Manager, should I also enable that profile in Gimp?

I finally got around to using dispcalGUI to profile my monitor under Linux. Now, having assigned that profile system-wide using Gnome Color Manager (or the Xfce Color settings dialog), there's a ...
1
vote
1answer
164 views

How to offset the positioning of the Preview Gridlines in GIMP?

When rotating an image with GIMP, there is an option to superimpose gridlines on the image. The number of lines is settable but the offset is not. I'd expect that when changing the center of rotation, ...
1
vote
1answer
734 views

Are Gimp's “color space” blend modes the same as those in Photoshop?

The Wikipedia article on Blend Modes describes three of them in particular like this: Photoshop’s hue, saturation, color, and luminosity blend modes are based on a color space with dimensions that ...
1
vote
2answers
1k views

Is there a way to get Gimp to use color curves from a Technicolor CineStyle S-curve lookup table?

Is there a way to import a Technicolor CineStyle S-curve lookup table in Gimp->Color->Curves? The lookup table is just a text file with 256 lines, with a numeric value (0..255) on each line: 0 ...
6
votes
1answer
272 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
456 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 ...
10
votes
2answers
756 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
2k 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.
27
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 ...