Pseudo Black-and-White

[John Rostron]

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

 

[v_kyr]

See: 1bit / bitmap mode colour format?

[Wosven]

+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.

[John Rostron]

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

[walt.farrell]

I believe this was recently logged as a bug.