John Rostron Posted January 3, 2019 Share Posted January 3, 2019 One feature missing from Affinity Photo is the ability to handle One-bit, or black-and-white images. I do a fair amount of scanning black-and-white documents, making small edits (typically cleaning up) and then saving them. I typically use Vuescan which will scan my documents and save them as 1-bit black-and-white tiff documents. I can open these in PS CS5 or in Paintshop Pro, and they open as 1-bit documents. If I open these tiffs in AP, they open as 8-bit RGB! Not even as Greyscale. I would expect that the histogram should show just black and white pixels, such as in this histogram (from Curves): However, what it shows is a histogram like this (also from Curves): Affinity has clearly found a range of pixels (in a 1-bit image) with intermediate values. I can apply a threshold in the Curves Adjustment at 127, which does indeed give me the histogram as seen in my first image. Can anyone explain this phenomenon? John Quote Windows 10, Affinity Photo 1.10.5 Designer 1.10.5 and Publisher 1.10.5 (mainly Photo), now ex-Adobe CC CPU: AMD A6-3670. RAM: 16 GB DDR3 @ 666MHz, Graphics: 2047MB NVIDIA GeForce GT 630 Link to comment Share on other sites More sharing options...
v_kyr Posted January 3, 2019 Share Posted January 3, 2019 See: 1bit / bitmap mode colour format? Quote ☛ Affinity Designer 1.10.8 ◆ Affinity Photo 1.10.8 ◆ Affinity Publisher 1.10.8 ◆ OSX El Capitan ☛ Affinity V2.3 apps ◆ MacOS Sonoma 14.2 ◆ iPad OS 17.2 Link to comment Share on other sites More sharing options...
Wosven Posted January 3, 2019 Share Posted January 3, 2019 +1 for B&W bitmap and the possibility to colour them (assigning a colour to the black and/or the white, or transparency) when placing them in APub. And if possible doing the same with greyscale B&W. Quote Link to comment Share on other sites More sharing options...
John Rostron Posted January 3, 2019 Author Share Posted January 3, 2019 This message was not intended as a Feature Request. It was intended for the Affinity on Desktop Questions forum. Could it please be moved? John Quote Windows 10, Affinity Photo 1.10.5 Designer 1.10.5 and Publisher 1.10.5 (mainly Photo), now ex-Adobe CC CPU: AMD A6-3670. RAM: 16 GB DDR3 @ 666MHz, Graphics: 2047MB NVIDIA GeForce GT 630 Link to comment Share on other sites More sharing options...
walt.farrell Posted January 3, 2019 Share Posted January 3, 2019 I believe this was recently logged as a bug. Quote -- Walt Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases PC: Desktop: Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 Laptop: Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU. iPad: iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard Mac: 2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1 Link to comment Share on other sites More sharing options...
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