[Combining Blueprints]

The previous contains an example. The originals are blueprints but they microfilm is grayscale. In some cases the person doing the film to digital transfer inverts them (as here). In other cases they do not. The area outside the actual blueprint can be trimmed away.

[Combining Blueprints]

[Combining Blueprints]

I guess the answer is NO.

[Combining Blueprints]

On the Mac I use Photoshop primarily for 

1. Viewing blueprints 

2. Combining microfilm images into a single blueprint.

For the first I used to be able to use Preview but I "upgraded" the operating system and Preview no longer will display large images. 64,000 x 6,000.

For the second, I have a large number of microfilm images of blueprints. A single blueprint typically spans 2–4 microfilm images. However, they appear to have used different camera settings frequently for the same blueprint.

I would like to ditch all my adobe software. I would like to know whether Affinity Photo can handle this kind of thing.