The Dalsa FTF-6080C 48 megapixel 6 um is also interesting I think, only(?) used in the tethered-only Sinar eXact. No long exposures possible with that though.
Both sensors are "old" technology though, would be nice to see some new development in the 6um pixel size in the future.
I can never understand the point of comparing "shiftability" of the same lens on different sized backs. Assuming same sized pixels (as is the case between the IQ160 and IQ140) you gain absolutely nothing by choosing the crop back.
And that has a 125mm image circle, so if I can shift the 70HR 18mm, I rather suspect I'll be able to shift the 90 rather more than you mention there.90mm (Schneider Digitar, Rodenstock Digaron-W)
54x40: 16.0/40%, 13.3/25%
48x36: 20.0/55%, 17.2/36%
44x33: 22.7/68%, 19.8/45%
FWIW, here's the 70HR on the IQ180. 9-shot stitch (in portrait) to the full limits of the ALPA Max:
Full size is 280MP.
We could have a chip say 90x90mm so we cover the whole image circle all the time and just crop in post, and then we could skip having movements on the camera at all. However a large chip is exponentially more expensive than a small chip, so with smaller chips you can make cheaper backs. Thus I think it is a good idea to not make sensors larger than they need to be.
I also find it more enjoyable to compose with the tech cam, shift the sensor into the right position, rather than cropping in post although the result is exactly the same of course.
Likewise, I think it is a good idea to provide lenses that don't resolve more than they need to do, as you can use simpler more cost effective lens designs.
I was not really clear either I realize now. What I meant with 70/90 is the image circle diameter, not the focal length. The Digaron-S wides has 70mm image circle, the Digaron-W wides has 90mm image circle.