I got some test prints from my printer! The images above are #19 (top) and #4 (bottom). #4 looks pretty fantastic; the blacks are quite deeps and the whites quite bright; visually comparing with my Endura Metallic prints, the blacks are a little lighter but the whites are quite close. I was a little concerned about the (relatively) low resolution of these works both due to the source images and also due to the slowness of processing. Looking at the digital file you can see a little banding due to the subtle gradients, but these look very seamless and the texture of the canvas certainly contributes to the smoothness.
While #19 was quite popular in my Twitter pole, it seems to fall quite flat on canvas; I think the luminosity contrast is too low. Looking at the luminosity contrast of the other short-listed compositions, it looks like #22, #24, and perhaps #3 could also fall quite flat. If I choose not to print those, I would eliminate the more contemporary paintings including cubist and surrealist pieces. The remainder source paintings were made from 1517 to 1633, so quite a narrow window. I’m unsure how to proceed, but I think I’ll need more test prints. I also did not include some of these in my video versions, so I’ll do some of that work next.