The Difference between DX and APS film??

[Photo Engineer]

I know but the uncropped frame size of the APS is too wide for most cases. I think either keeping the 3/2 ratio of the 35mm format or changing to the 4/3 format is better. In fact I think changing to the 4/3 format but keeping the diagonal to the same 43mm or so of the 35mm format would be a great thing. That way one can uses lenses made for 35mm and yet getting a larger area. The "native" APS format (what is really on the film) is close to the 16/9 and is too wide in most still images.

I agree, but I think that both the APS designers and the digital sensor designers were headed to a new aspect ratio to look better on HDTV. IDK this for sure but I heard a lot of talk about that at EK way back when.

And, their goal was to use both APS and digital lenses interchangably, and not have then interchangable with 35mm. There were also reasons why the actual sensors were made the size they were due to some sort of legacy from the electronics industry. I'm not sure at all what that might have been.

PE