@Nesguy and @MajorPainTheCactus don’t pay too much mind to those screenshots as I can’t even remember which preset is that. I lost a preset I had where I had just found that things looked somewhat nice so I basically have to start over. I don’t even remember which of @MajorPainTheCactus’s presets it was based on. On my TV there’s a lot of variance in the output (including colour and brightness) depending on which TVL is selected and also which Type of mask. Shadow Mask seems to work the best as I can do all the TVLs and the colours look most accurate to me. If I switch to Aperture Grille then I can’t do 600 or 1000TVL. They look green. Slot Mask’s colours look weird.
I’ll have to go through the presets again until I find the one that looks best on my screen. I’m really looking for a nice Aperture Grille look with proper colours (to my eyes) with enough brightness, saturation and contrast.
My TV is SDR so those pics were taken in SDR mode. When viewed in the forum post on the same TV they look a lot darker than in real life. On my phone they looked okay.
So in time, probably when I get something that looks the way I like (again) I might report back with some more empirical findings but I do see the potential in the shader!