if the input image is modified, the copy will immediately and automatically reflect this change. In practice it is like making a copy-and-paste of the source layer, except that the copy is done "on-the-fly" ad that there is actually no additional memory allocation involved. You might think of it as a sort of "smart copy": the clone layer "gets" the data of the source layer defined in the configuration dialog and sends them to its output. Let me spend few more words on what "layer cloning" exactly means here. Here it is (move the mouse pointer over the image to see the original): This time I decided to start from the end, and show the result of this tutorial (basically a mid-tones luminosity mask + strong contrast adjustment) to the same image shown at the beginning of Pat David's post. Again, photoflow presets have a certain advantage over GIMP scripts, as they simply re-create the original filter stack: as photoflow's filters are fully non-destructive, you will have the possibility to further tweak the settings (for example the curves adjustemt that defines the luminosity range) once the preset is loaded. The steps described in the tutorial will at the end be saved into a preset so that they can be re-applied automatically to a different image. You will need a very recent version of photoflow in order to follow the steps described here, due to some bugs that I just identified and fixed. This way the mask will remain fully configurable and you will be able to immediately see the effect of a change in the selected luminosity range in the preview window we will create the luminosity mask "on-the-fly" by simply applying a curves adjustment to a greyscale copy of the input image.the luminosity mask will be associated to a group layer therefore, the mask will be applied to any combination of filters and adjustments (curves, toning, sharpening, etc.) that you might include in the group.However, compared to the Photoshop and GIMP versions the technique presented here is more flexible, for two main reasons: Before starting, I would like to clearly state that the technique presented here is not my invention, but is directly inspired from Pat David's blog posts here and here, which in turn refer to the original Tony Kuyper's Luminosity Masks Tutorial.
Bpo photoflow how to#
This tutorial describes how to create and use luminosity masks with photoflow.
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