AdamStanislav

They don’t. They look different in AP than in any other software.

Why stop there? Why not Raspberry Pi? And brickOS, and QNX, and MS DOS, and NuttX, and Apache Mynewt, and BlackBerry and Firefox OS, and TurboDOS, and Oberon, and Netware, and JavaOS, and FreeDOS, and Xinu, and OpenSolaris, and..................

Then how am I supposed to see what I am doing when the colors look completely different in AP than they do after exporting the changes to a PNG or such?

By the way, I cannot use Affinity Photo for any kind of color works. When I open the above photo in AP, the colors look absolutely ghastly: Why oh why does Affinity think my monitor requires some weird profile? I have a professional BENQ monitor which shows perfectly good colors with no need of a profile.

Back in September 2012 I was visiting my home city of Bratislava, Slovakia. I took a bunch of photos with my Canon digital camera, but eventually misplaced the card. Now that I had to move after the fire in my apartment building, I found the card. Here is a scaled-down version of one of the pictures: Today, I have been trying to figure out how to produce a black & white half tone in Affinity Photo. I cropped the above image, rescaled it so the longer dimension would be 11" (so it could be printed to an 8.5x11" sheet of paper, which is the US variation of the A4 size used just about everywhere else) at 1200 DPI. Added a New Live Filter Layer / Colors / Halftone, set Contrast to 100 (which I wish was the default for the halftone filter), Cell Size to 24 (so I get 50 LPI, sine 24 dots per line and 50 lines per inch gives 24*50=1200 dots per inch), and the Screen Angle to 225. Here is the result: I wish I had a screen printer. If I did, I would invert the image and print it in white ink on a black T-shirt. At least in theory, the result would look essentially the same as the halftone above. P.S. The photo is of a lower portion of the ancient Devín Castle which is at the junction of the Danube and Morava rivers at the border of Slovakia and Austria. When I was growing up, an electric fence (the “Iron Curtain”) prevented us from escaping to Austria. I walked by it many times.

I should add that you can easily change the LUT to have the same effect but with a different color by simply editing it in a plain-text editor and saving under a new name (with the .cube extension). Here is the original, TITLE "Blue Monitor.sLut" DOMAIN_MIN 0 0 0 DOMAIN_MAX 1 1 1 LUT_3D_SIZE 2 0.025 0.025 0.025 0.04622664613 0.3260622167 0.7400439226 0.04622664613 0.3260622167 0.7400439226 0.04622664613 0.3260622167 0.7400439226 0.04622664613 0.3260622167 0.7400439226 0.04622664613 0.3260622167 0.7400439226 0.04622664613 0.3260622167 0.7400439226 1 1 1 ## Converted from "Blue Monitor.sLut" by sltconv, v.0.6.0 Note that the first line after the LUT_3D_SIZE line contains the red, green, and blue values of the black component. By default it is 0 0 0 but here it is 0.025 0.025 0.025. That lifts the blacks ever so slightly making the image slightly less contrasty. This is followed by six lines, all of them identical. They all contain the red, green, and blue values of the monochrome color. Finally, 1 1 1 is the white component, which makes image keep its maximum brightness. All very simple. To change the monochrome color, you simply decide on its RGB values and replace the values in the six identical lines with them.

I watched a video today, in which someone pretended he was in the control room of a major TV studio by having a bunch of TV monitors in the background, each monitor showing something else, all of them being in black & white but with a blue tone, probably all emulated over a green screen. And I thought it should be an easy effect to accomplish with a simple LUT to make whatever those monitors are displaying into that blue monochrome, so I made Blue Monitor.cube.

I did not say it did. Or that it did not. I simply pointed out why a commercial software publisher may be worried about what might happen in the future. Since GNU licensing has never been decided by courts (at least not as far as I am aware), such a publisher, especially a relatively small one, might even worry about the remotest possibility of simply being sued, which can be a very costly headache. When the entire system’s name is preceded by GNU/ (as in GNU/Linux) where the entire GNU ideology was created by a person who expressed the opinion that all software should be free, a small business might worry about getting involved. Particularly so, when you read rumors (and psychologically it does not matter whether they are true) of someone demanding that the original creator of some software (I do not remember the details, that is why I am treating it as a rumor) release any changes to his own code after he released it originally under the GNU license. That despite the theory that the original creator can release his software under several licenses because he is not the licensee but the licensor. So reasons why a business may decide to or not to support GNU/Linux (or any other system) may not necessarily have anything to do with how good or bad, or how easy or hard to use the OS is, or with the strict legal state of its licensing model, or with how easy or difficult it is to port the software to the OS.

My guess would be because they want Linux users to buy nVidia hardware instead of their competitors’ hardware. The implications, I’d imagine, are that hardware vendors have completely different marketing priorities than software vendors. As in, open-source your drivers, sell more hardware. Open-source your software, make potentially no living. Perhaps had Linus not fallen for Richard Stallman’s ideology and changed the name from Linux to GNU/Linux, commercial software vendors would not have to worry about accepting the current or any future version of the license, while having no say on what that future version might demand of them, they might be much more accepting of Linux. Just my analysis as a psychologist.

What kind of templates?

Here is something I did before the fire, so I don’t actually remember what I did or why I did it (after the fire I had other things on my mind). But I saved it locally under the name Zelený Ryško, which is Slovak for Little Green Redhead.cube, so I probably started with the photo of some young redhead, a photo that probably did not do justice to his or her red hair. Anyway, looking at the source to this effect, I am assuming I selected a shade of green in that image, assigned it to the green color in a palette, then rotated all other colors (red, blue, cyan, magenta, yellow) based on that green, then gave everything the efficacy of -1, so the effect would be the exact opposite, and finally I reset the green color (and only the green color) to its default (i.e., rgb 0, 1, 0). When applied to the image I have been using to show what all these LUTs do, the result looked like this: Yes, kind of weird, but why not.

Thanks.

Glad to hear that.

Since it has been so long without my computer, of course I was just trying things, such as what would happen if I changed the contrast center of the black channel to a shade of blue and then increased that black contrast. The result surprised me, so I exported it to BlackBlue.cube and this is what it looks like, The whole LUT leaves everything at the defaults, and only changes the green and blue components of the black channel into negative values (thus increasing the contrast of those components): DOMAIN_MIN 0 0 0 DOMAIN_MAX 1 1 1 LUT_3D_SIZE 2 0 -0.2551195849 -0.5238095238 1 0 0 0 1 0 1 1 0 0 0 1 1 0 1 0 1 1 1 1 1

And here is the one that increases the secondary color contrast, SecondaryContrastIncrease.cube.

Oops, I meant it decreases it, not increases.

Well, I still only have some of my computer equipment, so here is just a quickie, called SecondaryContrast.cube. It just increases the contrast of the secondary colors (cyan, magenta, yellow), while leaving the primary colors alone. Because our vision perceives the primary colors more strongly, this effect is quite subtle. But it is there.

Very impressive.

Looks like you've accomplished the style you wanted. 😎

Haha, looks like you know me well.

Just to keep you updated, today I have moved to a small efficiency apartment. My things are still in storage, but once I get my computer equipment, I'll try to come up with a new LUT and post it here.

Nobody is.

I'm impressed someone is aware of the existence of my home city (Bratislava). 😉

Very nice work.

Thanks all. The forum does not allow me to click the like/thanks button, but please know I appreciate all of your support. Today I made a brief video about it.