Hi all,

using GIMP 2.10.34 on Win 10

I have been getting annoying wavy lines (I would describe them as, you know those topographical map of mountains, that shows the difference of heights) that actually come from the gradual transparency of a layer after using the Eraser tool. Basically, using the Eraser tool, with a Force of 25% ish and Hardness of 13% ish (actually, whatever these settings are, it does it anyway). Attached is a screenshot of the entire GIMP layout (you will see all the Eraser settings). Only 2 layers active, so basically the one on top was opaque and I'm simply slowly and smoothly erasing it to reveal the layer under. At some point, I do want the top layer to be completely showing the one under it, but I do want a certain "gradient", and that thing happens right at the gradual transparency.

I once had that problem, few weeks back. It was the same problematic result, only, it came from duplicating a text layer and applying a gaussian blur on the layer below, in order to create a glow like effect. A friend of mine told me: check to see if you're in 8 bit Integer precision, and put it higher if it is. I actually was at 8, and I put it at 16 bits and this problem disappeared. So yesterday, I was, wait a minute, I suddenly have this problem but I'm in 32 bit?

So I'm confuse here... Anyone knows what causes this (I mean I know where it comes from) but is this a "normal GIMP" thing I will have to live with? Is there a way to get rid of it once you created it? Or is there a workaround to make sure I wouldn't get this?

Thanx a bunch in advance

Stef

   

Hello,
I am wondering what the logic/reasoning is behind the use of layer masks.
Specifically, why, when you apply a mask to an image and you brush it, does the color from the below image appear?
Thanks,
fh

Hi,

I need to use one single image, and replicate it in different parts of the canva. So when I change the image, all the replication will auto change.

Please see the attached image as an example, where I have multiple layers showing different red dots across the canva.

Now I need to change this red dot to a different image, but I do not wish to go through all layers changing one by one. I would like to change the red dot in one single place, and affect all layers.

Is it possible to do something like that in Gimp?

Thank you in advance.

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So I'm building a custom Cad hatch fill pattern for a software I use and like to make the individual travertine stones look like they have a little bit of depth. See attached. I was able to piece together one single stone with three or four different actions but, what a pain. Anyone know a quick way to do this?

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The PNG compression level is that setting in the PNG options that is set by default to 9 and that everyone keeps that way.

But what is its purpose anyway since the compression is lossless? Once decompressed the image is still the same whatever the setting? So why is it an option?

It happens that the PNG compression algorithm is quite CPU-intensive so this setting tells the algorithm how hard it should try to find things to compress. Unlike JPEG where you trade file size for image quality, in the PNG format you trade file size for CPU during export, and on big images it makes quite a difference. So lets see what happens with four different images (16Mpix each except the photo which is 14Mpx):

• A plain text (8 lines in a text layer with a large font), which is expected to compress very well (PNG is designed to be efficient on computer-generate images)
  
• A Simplex noise which is random but with a large proportion of pure black pixels (about 50%)
  
• A Plasma noise which is also truly random but is made slightly less random by applying a small median blur to it.
  
• A photo of a gorgeous French village.
  

   

G'day, not quite Gimp related but hopefully being a photographic minded forum, just posing the question,  is there a way to find and sort or delete or separate doubles in my photos ?

I wish to try using Canon's Print Studio Pro to lay out pictures for printing.
It is a plugin for Adobe Photoshop, Adobe Photoshop Elements, Adobe Photoshop Lightroom, and Canon Digital Photo Professional.
Has anyone figured out how to plug Adobe plug-ins into GIMP?

Are we able to save a processed image as a j peg?

Hello, I have finally jumped out of the Adobe atmosphere and parachuted into the Gimp landscape, I will try and learn the ways as best I can for an old fart but if someone could please enlighten me as to a way to dehaze an image, I am not sure.
I have only ever been an occasional photoshopper and will now be an occasional graphic image manipulator so I don't know many shortcuts and have always been self taught, my methods of any processing have probably always been the long wrong way but usually get somewhere in the vicinity of what I am after.
Thank you for any help you may offer.
Peter.