Originally posted by *isteve Its BS, just like 1.3 crop rumours.
For one thing it would be narrower and deeper (if it was intended to fit in the same APSC image circle) so your wide angle lenses would not be so wide any more (it would be closer to 1.7X crop).
For another, I really dont fancy cropping every image I make when they already fit near perfectly on A4 and A3 sized paper. Rather than crop a square image to 3:2, I would be actually be easier to crop a 3:2 image to square.
Then you have all the folks who want 16:9 format!
The only reason it was used on large format cameras is that most of them could not be used in portrait mode because they were too blinking heavy.
Yes if the square sensor was designed to fit into the APS-C image circle, you would lose image width with a square sensor.
But if the sensor was 23.5X23.5, then there would be no change to how the DA lenses would function if the sensor was digitally cropped to act like an APS-C sensor. If the camera was switched to portrait or landscape, the 1.5 crop factor would still apply.
If the camera was used in full square mode, then it would have a crop factor of 1.3 (43mm FF image circle / 33mm DFX image circle)
Maybe this is where the APS-H rumor came from. Both a square sensor and the APS-H sensor have a 1.3 crop factor.
It would be a unique move for Pentax. Certainly define them in the APS-C market. It would also require a new mirror box, that would be a step toward a FF mirror box.
Personally, I would rather see an APS-H sensor used. I like the 3:2 ratio better then the 1:1.
Even if it is a BS rumor, I still think it is an interesting idea. Although, in a way it smells a little like the PZ-1P, and its panorama mode.