I placed them next to each other, hope you don't mind, any reason why the blacks on the right side picture appear more faded or lighter?
Two things jump out at me here:
The tone, obviously, but also the contrast. The contrast of the straight-through shot is better IMO. The lines in the beadboard are a bit darker and more clear. The image with the diagonal just has the appearance of a slight haze to it, which may also explain why it's visible in the black areas of the image, too. Of course, differences in camera angle and many other factors might be causing this.
I'd like to see a series of images of each setup to see if there is any variation, or if what we're seeing here is consistent. If both the tone and this "haze" is consistent, then I would say that this diagonal is problematic compared to the straight-through view.
These daylight comparisons I think are useful, and it would be good to see the same experiment on other diagonals as well.
Edited by CrazyPanda, 11 June 2019 - 07:38 PM.