A tip to get vignette with any camera.
While Cross-processing some slides, I noticed that a couple of my photos had had some vignette in it. Analyzing all the photos I saw a patern.
All of the cross-processed photos taken with the sun behind, had small parts of vignette especially in the upper side.The first picture is taken with the sun behind me. Notice that there’s no vignette.
And the other one, a building across the street, with the sun in front of me (no vignette) .