I alternate between shooting 6x9 roll film and 4x5 on my LF cameras. Given that the tripod is in a fixed position (perspective doesn't change) and th at I switch lenses to closely match the same composition from format to format ( i.e. a 90mm for the 4x5 and switch to a 65mm for the 6x9) I still like the feel of the image on the larger format. Is this caused by the difference in "compression" from using a longer lens on 4 x5? Or is it an illusion?

Has anyone else experienced this?

Thanks!