Nokton48
Veteran
Do you mind me asking what the vignetting is about on your image? It's come on those from other people also but did not have the opportunity to ask...
Sure. The 75mm F8 Super Angulon covers 4x5 with slight camera movements. I mounted it on my 5x7 Sinar camera, I wanted to see the sharpness and light falloff at the edges of the circle. I also raised the camera front to frame the top of the tree. Back in the day there was not a lens this wide that covered something this wide.
Bare tree branches are a good way to see the sharpness (or not!). This I learned from Fred Picker of Zone VI Studios.