Category Archives: Post-Processing

Principles and tools for post processing

Creating Composites Workshop by Sharon and Rob Prenton Jones

Overview We had a fantastic day-long workshop on Jan 7th 2024, presented by Sharon and Rob Prenton Jones https://www.prentonjonesphotography.co.uk/. They covered a range of topics including (apologies if I have forgotten any major topics – a lot was covered): Links … Continue reading

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Adding a mist effect

Mist can enhance some images, and adding a misty effect in Photoshop is not difficult. Here is one approach, based on the method demonstrated by Sharon Prenton Jones at a WCC workshop, Jan 2024. In this work through I am … Continue reading

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G’MIC

G’MIC, GREYC’s Magic for Image Computing is a full-featured open-source framework for digital image processing. It includes a wealth of image processing filters (about 600 at the time I write this), and is available as a stand alone command line … Continue reading

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Kaleidoscope effect

Repeating patterns catch the eye, and the Kaleidoscope effect certainly provides plenty of repeating patterns. Kaleidoscopes use angled mirrors to produce repeated patterns (https://en.wikipedia.org/wiki/Kaleidoscope), but this effect is easily achieved also in software like Photoshop or GIMP. There are lots … Continue reading

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Geoff’s Photo Doodler

The notes below should help get you started using my “Photo Doodler” program. First there is some background on what got me started on this project, then I give some examples, and then some brief instructions. Programming credits are at … Continue reading

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Triptych making in Photoshop and Lightroom

Geoff Shaw’s suggestions For some general comments on triptychs see HERE. This post will give a couple of approaches using Lightroom and using Photoshop. I use an example with the three images below (screen grab from my LR catalog). Lightroom. … Continue reading

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Feathering

Feather. This does not refer to plumage of birds, but the fuzziness in a selection or mask or brush. If you will forgive the visual pun, the image right illustrates on the left panel a hard selection (low feathering) with … Continue reading

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Pixel

Pixel. pixels are the basic elements of images. Each pixel is a point in the image and has associated values for the brightness of the colours that make up that pixel (Red,Green,Blue or RGB). Black is (0,0,0) ie no brightness … Continue reading

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Photopea – a free photoshop-like editor

Use it at https://www.photopea.com/ . This is an amazing project from a talented Czech Programer Ivan Kutskir. It comprises over 100,000 lines of code! This is an online program that you can run in your browser, with a photoshop-like interface … Continue reading

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DigiKam

DigiKam is a free, open-source package for Linux, windows and macOS. It has strong digital asset management and a comprehensive processing workflow. It has powerful RAW file editing and a non-destructive workflow (edits are saved in a database). It supports … Continue reading

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