It was a conventionally set-up perspective of the building, but which included reference points found in the photo and on the area survey ........the building was colour rendered by hand on water colour paper, scanned and inserted into the photo using a method which I refer to as being based on The Dambusters...........It is a technique I developed specifically for a client that didn't like CGI.
It's very cleverly done Al Not having experience with Photoshop, I have no clue but it is a nice piece of work
The best thing about them is that my clients could enlarge them to A1 size, maybe even AO, before the resolution started to suffer.
That could well be the case - I do remember when I bought a Richo camera in the 80's part of the marketing at the time for Richo was 'as used by Nasa'.
I'm no expert, but I just got a Panasonic GH4 to replace my Canon gear. Much smaller, lighter and 4K video recording. Really like it so far.