Meet the GIMPAuthor: Rolf Steinort
21 Nov 2018

Meet the GIMP

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Video tutorials for the free graphics software GIMP

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    Episode 201: OPSEC!

    Nearly all colour laser printers leave a pattern of tiny yellow dots all over the paper. These dots contain information about the printer and perhaps also about the time and date of the print, the IP of your computer and who knows what else. These codes are in there for at least a decade and the EFF has complained in vain. Reality Winner got cought with these dots – but perhaps they would have found out about her a bit later without them. I have a laser printer in my office at school. What does it tell about me? I research that with help of GIMP 2.9 – which looks terrific and has a lot of nice new stuff on board. And of course you get to see some of these new features.

  • Posted on 27 Jun 2017

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    Episode 200: Worldwide Pinhole Photography Day

    And here is the mythical Episode 200 - in a quite different form than planned. Years later, shabby audio and short. I am still on a steep conversion course with my workflow - and completely out of routine. Even the video is partly out of focus.... This Sunday (tomorrow!) is the Worldwide Pinhole Photography Day. In the video I demonstrate a quick and dirty way to convert an expensive digitial camera to a cheap quality pinhole camera.

  • Posted on 29 Apr 2017

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    Episode 199: G’MIC

    G’MIC is a lot of things that do stuff with images. You have a stand alone program with a complete image manipulation and analysis programming language, an online service and a GIMP plugin that gives easy access to (nearly) the whole package. Don’t get G’MIC from other sources than their pages – the update cycle is so fast that package maintainers can’t keep up. The version recorded in the video is already outdated twice at the time of the publication. G’MIC is mostly developed by Dr. David Tschumperlé of the GREYC, an institute at the University of Caen in France that is also part of the Centre National de la Recherche Scientifique (National Center for Scientific Research). So definitely no hobbyist project. I met David and his friend and colleague Jérôme – also a scientist AKA Dr. Jérôme Boulanger – at the LGM in Leipzig. Very nice guys! See Pat David’s wonderful blog post for more images and a report. You can find information about G’MIC at their site in the very good and complete manual, at YouTUBE from G’MIC and David, at Pat David’s Blog and all over the Internets. The second part of the video is a promotion for Ramón Miranda‘s very good training DVD “Muses”. It goes through the whole process of learning Krita – a graphics program under Linux and Windows, which is much better for painters than GIMP – up to finishing a real digital painting. You can buy the DVD at the Krita shop, 32.50€ is comparable to other kinds of such DVDs and the proceeds support the Krita Foundation. I got this one for free – and I will give it away! If you want to have it, write a comment to this blog post before Episode 200 is published. Get your mail address right (it will only be visible to me) and mention that you want the DVD. After the deadline I’ll have some supposedly innocent children draw a winner. The TOC 00:00:00 Start of video 00:01:10 Installing the G’MIC Plugin for GIMP 00:03:00 Installing and using G’MIC as a stand alone program 00:10:00 G’MIC Online service 00:10:40 Using the G’MIC GIMP Plugin 00:13:40 Pencil Drawing emulation as an example 00:18:10 Film emulations and grain as an example 00:25:15 Spectral filters – Fourrier included 00:26:20 Plotting Graphs with G’MIC 00:26:50 Conclusion 00:29:20 Ramon Miranda’s Krita tutorial DVD 00:33:10 EOF

  • Posted on 01 Jun 2014

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    Episode 198: Darktable revisited

    “darktable is an open source photography workflow application and RAW developer. A virtual lighttable and darkroom for photographers. It manages your digital negatives in a database, lets you view them through a zoomable lighttable and enables you to develop raw images and enhance them.” I cant say it better than this bit from their page. I had tested darktable in 2010 and found it promising – but stayed with f-spot and later Shotwell. But now I’ll switch to darktable. These 42 minutes are a rigorously cut down version of my nearly 2 hours long walk through darktable – I was distracted so much by the endless modules and possibilities that I forgot the time. This will not be my last darktable video, I’ll try to focus a bit more on usable stuff in them. ;-)

  • Posted on 26 Apr 2014

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    Episode 197: The LGM 2014 Group Photo

    I went to the Libre Graphics Meeting 2014 in Leipzig to get either a boost for my motivation or to find an end for this project. It turned out to be a booster. It was a really good time – even with missing the first day and the (for me) most interesting talks because I had to work that day. Another day was spent at the Zoo with Pat David and his wife, more time in the coffee room, Milchbars and restaurants. All the time having good conversations and learning a lot. And then I got the honors of shooting the traditional group image. I assume it was not my track record of famous group pictures but the 36 megapixel resolution of my D800 that led to that decision. In this episode I cover the post processing of the image and how I blended my previously taken image into the group. The TOC 00:00:00 Intro 00:01:14 The LGM Group Photo 00:04:05 Rotating the image 00:06:05 Adjusting contrast and brightness with the curves tool 00:09:23 Getting myself into the image 00:10:54 Registering the layers 00:14:38 Merging with a layer mask 00:17:55 Ways to change the brush size 00:18:50 Cleaning up the layer mask 00:20:38 Curves adjustments on a selection 00:24:28 Cropping the image 00:25:58 Sampling a fill colour out of the image 00:27:14 Sharpening with wavelets 00:31:12 Adding the SVG logo 00:34:04 Scaling down and exporting 00:36:38 Good bye! 00:37:06 EOF

  • Posted on 13 Apr 2013

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