Any love for GIMP ?

Started 3 months ago | Discussions thread
TorsteinH Senior Member • Posts: 1,442
Re: GIMP doesn't work that way.

NAwlins Contrarian wrote:

But GIMP has, and is not even supposed to overcome in the next major version (the forthcoming but we don't know when 3.0) the huge limitation for serious photo work that 90% of its operations are destructive--in the sense that instead of writing a set of instructions that are incorporated into the on-screen preview and stored to be incorporated into the next render-and-export, but may be modified or cancelled at any time--and actually modify the underlying pixels (in memory, not on disk unless you export over the source file). So you cannot undo or even modify them without first undoing everything you've done after them, and thereby losing all subsequent work.

Just a question. I fintd it strange if Afinity works like Lightroom or DXO where every local operation you do default to a new layer? That's the only way I can understand that you can add changes without working with the underlaying pixels.

If you as an example adjust Saturation, you automatically get an adjustment layer?

I think the terminology of "layer" is confusing. Different software and different people use it in different ways. Affinity Photo has things it calls "live filters" and "adjustment layers" (and other things). If I tell it to add a saturation adjustment--we can call it whatever--the control pops up, I set it as desired, I close the control, and then it is added to the list of controls in a panel on the screen. I can also add a mask to most and maybe all of these controls, so that they affect only a local area, or affect different areas of the image to different extents. Also, I can scroll up and down that panel and disable or modify any of those controls at any time, and I can re-enable any control I've disabled, as long as I don't actually delete it. If I save the edited image in Affinity Photo's native format, then in my next session I can go back and change, disable, re-enable, or delete any of those controls. When I export the image to a TIFF or JPEG or whatever, Affinity Photo renders all of the enabled controls into the version it is exporting.

Whatever Afinity name them controls, adjustment layers etc. it's just that, layers with different propperties.

In Gimp, Photoshop, PaintShop Pro or whatever else you have to manually add a layer if you want to be able to undo your operation without undoing everything else.

No, GIMP layers do not work like AP's controls do. A GIMP layer is either pixels, or pixels plus a mask. If you change the saturation of that layer, then the actual pixels are modified. GIMP layers cannot contain pure controls--i.e. instructions about how to modify what's below them--that can be changed or removed later in a non-destructive way, and that will only be 'baked in' when exporting as a TIFF or JPEG.

I have used GIMP layers for many years. They're good and convenient. But with rare exceptions (like text layers), GIMP layers don't allow the user to make non-destructive edits.

Whatever you do on a layer, stays on that layer, so in that respect they are 100 % non-destruktive. If you want to undo, just delete the layer.

I am not sure if Gimp has pure adjustments layers like Paintshop Pro or photoshop, but thats another story.

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