Since there are no rise, fall or lateral shift the coverage shouldn't be an issue. I mean, if the light is considered as a cone coming thru the lens, the tilt or swing will actually require a somewhat smaller image circle? Or I'm I visualising this wrong? But okay, that is off topic anyway, since the problem seems to be the size of the opening in the back. If someone could post a picture of either cameras backside we could do some comparisons. The universals backside with a polaroidadapter that is.