Jump to content
You must now use your email address to sign in [click for more info] ×

Improve Gamma management. the wrong Gamma is eroding you masterpiece...


Recommended Posts

https://ninedegreesbelow.com/photography/linear-gamma-blur-normal-blend.html

http://www.ericbrasseur.org/gamma.html

https://docs.krita.org/en/general_concepts/colors/linear_and_gamma.html

Watch both links. Gimp v2.10.28 gamma is perfect, Pass my test.

this modification to give more space to darker values does lead to wonky color maths when mixing the colors.

We can see this with the following experiment:

spacer.png

Left: Colored circles blurred in a regular sRGB space. Right: Colored circles blurred in a linear space.

Colored circles, half blurred. In a gamma-corrected environment, this gives an odd black border. In a linear environment, this gives us a nice gradation.

This also counts for color smudge brush:

spacer.png

That’s right, the ‘muddying’ of colors as is a common complaint by digital painters everywhere, is in fact, a gamma-corrected colorspace mucking up your colors. If you had been working in LAB to avoid this, be sure to try out a linear rgb color space.

The more restricted you put on the program, the closer you program is to idiot.

Link to comment
Share on other sites

6 hours ago, kirk23 said:

Should be a checkbox in settings at least,  same as in Photoshop

Yes! Yes! Yes! 

Go to Edit -> Color Settings... (Ctrl+Shift+K) and klick on the More Options button. In the Advanded Controls rollout at the bottom there is an option called Blend RGB Colors Using Gamma: activate this option and set it to 1.00, now Photoshop will do linear maths on all the colours even. 

The more restricted you put on the program, the closer you program is to idiot.

Link to comment
Share on other sites

As a limited workaround, you can adjust blend gamma on layer level.

create a new layer for every color, to keep it separate 

set blend ranges, blend gamma to 1 (from 2.2)

This does not intend to weaken your feature request, i fully support it. 

Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

 

Link to comment
Share on other sites

  • 6 months later...

@AftemplateI agree that there should be easy ways to customise these. Like a presets system where you choose your own default Blend Options whenever you make a new layer/group/whatever. One trick I have found though is that you can actually select multiple layers at the same time and drag the value down to 1 so you don't have to manually change one at a time. Might be a good thing to know. :)

 

 

Link to comment
Share on other sites

  • 2 weeks later...
27 minutes ago, Bazyzzy said:

Any updates on this issue?

You may need a good portion of patience. Affinity publishes updates when there are ready (a few times per year), and normally won't give any updates on status of bug fixes or feature requests (except in rare cases).

Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

Terms of Use | Privacy Policy | Guidelines | We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.