Thank you Les.
I did try stitching the painting from three 50mm shots and had trouble with it because of the painting looks
so similar throughout, not distinguishing features like defined lines or shapes. Also, because I had to move the tripod (no
rail system), the lens did turn to one side just a bit and perspective changed significantly. WB did change too, I set it to
flash. I see now that it must still be an auto mode, but I would still worry that by shifting the lens, WB would read
differently just because the light distance would change. I do have a tamron 90mm as well, but since the space is tight
and the painting is tricky to stitch, I avoided it so far. I did also try outside, with help and a tall wooden fence, but due to
the size it was a huge problem. I think ideally it would need to be in some perfectly lit large indoor space.
Would you not recommend a 35mm lens at all?