Think of it as a metal Holga ... with working aperture arm. I think it actually has nicer vignetting than a holga and i'm quite happy about my impulse purchase of it. This is one of the "original" Sportis so only 2 aperture choices - sunny or cloudy/flash (sound familiar?).
Excuse the poor contact prints, i should have a proper contact printer soon rather than a scummy piece of glass I manhandle in dim safelight conditions.