kirk23 Posted March 18, 2023 Posted March 18, 2023 So we could have 5 channels for each layer instead of just 4 . Would be so helpful for so many things. Quote
walt.farrell Posted March 18, 2023 Posted March 18, 2023 How would 16-bit get you a 5th channel? Wouldn't you have the same 4 channels (C, M, Y, K) but they could have larger values? Quote -- Walt Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases PC: Desktop: Windows 11 Pro 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 Laptop: Windows 11 Pro 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU. Laptop 2: Windows 11 Pro 24H2, 16GB memory, Snapdragon(R) X Elite - X1E80100 - Qualcomm(R) Oryon(TM) 12 Core CPU 4.01 GHz, Qualcomm(R) Adreno(TM) X1-85 GPU iPad: iPad Pro M1, 12.9": iPadOS 18.3.1, Apple Pencil 2, Magic Keyboard Mac: 2023 M2 MacBook Air 15", 16GB memory, macOS Sequoia 15.0.1
Old Bruce Posted March 18, 2023 Posted March 18, 2023 I found 8 requests for 16 bit (and or 32 bit) CMYK files, 6 of them started by @kirk23. And other than rather vague explanations like "it would be useful for many things" no real information about what could be achieved is given. To be taken seriously you'll need to show how a particular end result would be possible only with 16 bit CMYK channels as opposed to using 16 bit RGB documents. CMYK is for printing presses, newspapers, magazines, calendars, etc. in addition CMYK has a smaller colour gamut than RGB. I am a fan of using 16bits per channel for editing in RGB, much smoother gradients. Far better results when using adjustments. Blend modes are more subtle. An overall better looking finished product. I honestly don't understand how a unique and proprietary CMYK document would add any utility to any existing workflow. Additionally it would be unable to be exported to any existing file format for use in any other software for viewing or printing. Quote Mac Pro (Late 2013) Mac OS 12.7.6 Affinity Designer 2.6.0 | Affinity Photo 2.6.0 | Affinity Publisher 2.6.0 | Beta versions as they appear. I have never mastered color management, period, so I cannot help with that.
kirk23 Posted March 18, 2023 Author Posted March 18, 2023 3 hours ago, walt.farrell said: How would 16-bit get you a 5th channel? it's actually 5 channels in Affinity . you forgot alpha one. It's rather CMYKA 22 minutes ago, Old Bruce said: no real information about what could be achieved is given What I am asking is not related to printing. I couldn't care less about printing. It's all about extra channels . And gamut is irrelevant also. I can do my own LUT in Affinity that would show me whatever colors I need. CMYK is all just same value numbers and 16 bit gives us more of them . Would allows to use extra channel for impasto painting , special ID masks. Keep UV values in K and A . Have distortion values in extra channel and gazillion other appliances necessary in 2d compositing . If they make 32 bit cmyk like in Photoshop it could be actually 10 channels in single layer since 32 bit allows to keep different images before and after comma. In a word I am asking for all those things people still using Cmyk in Photoshop for after printing industry have died basically. Quote
walt.farrell Posted March 18, 2023 Posted March 18, 2023 4 minutes ago, kirk23 said: it's actually 5 channels in Affinity . you forgot alpha one. It's rather CMYKA Yes, but you have those 5 channels now. You don't need CMYK/16 to get them, which was the rationale/justification you provided. 5 minutes ago, kirk23 said: Would allows to use extra channel for impasto painting , special ID masks. What "extra channels"? You'll still have just CMYK and A. Quote -- Walt Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases PC: Desktop: Windows 11 Pro 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 Laptop: Windows 11 Pro 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU. Laptop 2: Windows 11 Pro 24H2, 16GB memory, Snapdragon(R) X Elite - X1E80100 - Qualcomm(R) Oryon(TM) 12 Core CPU 4.01 GHz, Qualcomm(R) Adreno(TM) X1-85 GPU iPad: iPad Pro M1, 12.9": iPadOS 18.3.1, Apple Pencil 2, Magic Keyboard Mac: 2023 M2 MacBook Air 15", 16GB memory, macOS Sequoia 15.0.1
kirk23 Posted March 18, 2023 Author Posted March 18, 2023 4 minutes ago, walt.farrell said: What "extra channels"? You'll still have just CMYK and A. Yes, we have . All same 5 channels . The issue is that with 8 bit per channels you couldn't keep enough precision for the depth to make a nice impasto . It would look ugly as hell . Same with UV channels . they are unusable in 8 bit Quote
Old Bruce Posted March 18, 2023 Posted March 18, 2023 15 minutes ago, kirk23 said: Would allows to use extra channel for impasto painting , special ID masks. Keep UV values in K and A . Have distortion values in extra channel and gazillion other appliances necessary in 2d compositing This sounds like you may want to be using EXR files. Quote Mac Pro (Late 2013) Mac OS 12.7.6 Affinity Designer 2.6.0 | Affinity Photo 2.6.0 | Affinity Publisher 2.6.0 | Beta versions as they appear. I have never mastered color management, period, so I cannot help with that.
kirk23 Posted March 18, 2023 Author Posted March 18, 2023 11 minutes ago, Old Bruce said: This sounds like you may want to be using EXR files. Well, I do want but they are pretty useless in Affinity . It splits them into a mess of individual layers and what I want is basically to work with all those info accessible from a single layer . CMYK provides a nice compromise. Would be nice if we could use cmyk brush nozzles too . It's tremendously more convenient when you operate with a single layer at once instead of of a mess of linked ones. Quote
Recommended Posts
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.