Warren,
Including the 15 minute warm up time for the Northlights and getting it all set up on the wall... about an hour. Then about a half hour on the computer.
I set it so I was shooting one horizontal half in 3 sections and turning it 180º and shooting the other half. I placed some painters tape to locate the corners so when we flipped it, we put it back in the exact same place so there was no resetting of the camera.
That's is what is SOO nice about having the wall move!!! The camera and lights stay in place and the art moves. The vacuum in the wall helps alot, also.
The piece at that size was the third step in my job for her. I first shot her original and enlarged it to about 36x36 and then she worked that and I scanned and enlarged to 48x48 and then she worked THAT and I shot and enlarged it to the final 64x66 size.. and then she worked on THAT and I did the final 64x66 piece for a finished file of the work. It was almost all B&W ink work with a couple of color bits hidden in. Very abstract.
I charge her around $200 for that final size as I had to have a friend help me move it and set it in place on the wall and I had to take her out to dinner for helping me!!
It was all Epson enhanced matte paper.
Each scan and print was a separate charge so I made a small boatload on that job!!
In my setup, the art doesn't move in front of the lens, the sensor moves across the image coming into the lens and then I move the wall to the next section to scan.
I think that way there is no chance of getting movement artifacts in the file from minute movements of the art as it passes by the sensor.
I remember in my first attempt to set this system up, I had it in my house and the furnace coming on would make zig zaggy lines in the scan... my cat walking past the leg of the tripod would do it... me moving would do it. Apparently, an 1841 cape isn't as stable as a nice concrete floor for stopping movements.
Strangely enough, for the last 6 months, I have only had small stuff in for scanning and haven't been to the studio for any of it. I'm just using my Epson 10000XL.