Only downside I've encountered using W10 IoT LTSC is that I had the temporarily change the currentbuild key (HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion) in registry to 19045 to be able to install docker and WSL2.
Focal length wouldn't even be an issue if the photographer was taking the photos from the same position. The fish-eye effect is literally because the photographer is closer. Cropping a photo with a different focal length will give the same composition and difference will be the distortion introduced by the camera and the image processing.