agorabasta wrote:Something is definitely doable
That something would be an equivalent of 2Mp-res FF soapbox with horribly soft image corners plus a vignetting of about 4-5 stops plus strong coloured ghosting into the corners too.
But you may already 'preview' such a system output. Just dig up some old roll, scan it, add vignetting and ghosting in the corners...
Still you could possibly get an almost decent 10x15cm printout off it some now and then, that's if the captured scene cooperates somehow.
Well, a few things spring to mind immediately.
1. You have the the NEX 5 which is what you like. If someone starts to sell a camera something like what I am hoping for then it definitely is not for you. Easy solution: Don't buy it.
2. About 25 years ago I had something on my office wall that said:
Old Chinese Proverb: Man who says it can't be done should not interrupt man who is doing it.
3. In 1999 there was the APS film Canon IXUS II with a 23-46mm f4.2-5.6 lens. With the APS 1.25 crop factor that was 29-54mm equivalent. With a 1.5x crop factor that is 35-70mm equivalent. Actually, a lens for an APS film camera had to also cover APS-H so that is even tougher. A 1.5x, 1.6x, or 2x (4/3) digital sensor is much smaller than APS-H. Here are the 3 APS sizes that were available with APS film:
APS-C 25.1 x 16.7mm
APS-H 30.2 x 16.7 mm
APS-P 30.2 × 9.5 mm
As you can see, the lens had to cover APS-H even if the print that was made had a 3:2 aspect ratio (APS-C). Note that APS-C film size (1.25x) is bigger than the APS-C 1.5x and 1.6x digital size.
Probably in 2011, 12 years later, a somewhat better lens could even be made especially since it would be for a smaller 1.5x, 1.6x, or 2x sensor rather than 1.25x sensor. These days the camera would do automatic lens corrections (CA, distortion, vignetting, etc.) which would improve the results (as some digital cameras already do). Not suggesting that this or any other old lens be used. I think better lenses could be made now.