November 2011

Meet the GIMP! – E004: A Ship in the Fog (Part 2) – Correcting Colours

pixelmove.com

http://youtu.be/nc2DZ1MtbYY

In this episode of my video podcast I show how to correct colours with layers in GIMP.

For reducing the green tint of the image I add a layer filled with a bright magenta (white minus a bit green) and set the layer mode to “multiply”. This reduces the green in the image proportional to the amount of green in each pixel. The amount of the effect can be adjusted by changing the opacity of the layer or changing the colour of the layer.

Then I add a bit of blue with a layer filled with a very dark blue (black plus a bit blue) and set the layer mode to “screen”. Now the blue in each pixel is enhanced proportionally. This can also be adjusted.

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Meet the GIMP! – E003: A Ship in the Fog (Part 1)

pixelmove.com

http://youtu.be/I03IWeEvv5o

You are in for a mix of topics in this screencast.

I start with answering the first comment I got and show some ways how to get the GIMP 2.3 for different operating systems.

The site I mention in the podcast is www.gimpusers.de. EDIT: There is an english version of that site under www.gimpusers.com. The Mac stuff is at gimp.org.

Then I begin to work at an image of a ship coming down the river Weser on a foggy morning. The image is mostly gray and very low in contrast. As this was shot in RAW, it is possible to get something usuable out of it. You get a lecture about the difference of 256 steps between black and white in JPEG and why the 4096 steps in RAW are better.

I show how to access the menues of the GIMP in three different ways, how to analyze an image with the histogram tool and the colour picker, how to rotate an image just a little bit and how to crop it using the Rule of Thirds (not a LAW — but a nice rule of thumb) to get an aesthetic result. And I nearly forgot to save the image in GIMP’s native image format — XCF.

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Meet the GIMP! – E002: Setting up the GIMP

pixelmove.com

http://youtu.be/X5wcrmRPBDs

This video is obsolete and has been replaced by Episode 66!

The GIMP is different from other Windows or Macintosh programs and so a bit different to set up. With this video I show how to move the dialogs into the main window, how to set up the tools and which preferences to change.

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