Here's a truly "unique selling point" for Pentax.
Over in another thread
here there was an oblique reference to the aspect ratio.
Wouldn't it be exciting to be able to choose the aspect ratio?
I'd
love to be able to not only capture the conventional 135 ratio of 3:2, but 4:3, 5:4, and
especially 1:1. Thus: 36x24, 34x26, 32x25, and 30x30. (All in millimetres, rounded down.)
To achieve this, the viewfinder should cover the entire image circle, with superimposed frame lines for the current crop. We'd even have some of the 'rangefinder' benefit of seeing things coming into the frame lines.
This would truly set Pentax apart from the other camera manufacturers.
Down side? Well the petal-shaped lens hood would be less relevant, and the conical section preferred.