Ii would be great if you could print that chart (
http://www.takinami.com/yoshihiko/photo/lens_test/USAF.pdf ) and post crops of center and corner, then we would be able compare.
If making shifts of entire pixels then not much resolving power is added, but shift can be subpixel, and if photosite is smaller than pixel then there is room for super-resolution effect, so best would be you shot that chart, if you post a low res of the entire shot with a 100% crop of the critical elements then effective resolution can be easily calculated.
Probably the SR1 may take a better scan of 35mm film, but I doubt that it can surpase the 240MPix effective the V850 extracts from a 5x7" negative.
Not at all !!! the ICE only modifies the places were Infrared channel shows dust or scharches ! the rest of the image is left absolutely intact. Were you were told that ?
See the train image:
https://www.silverfast.com/highlights/isrd/en.html only the detected dirt (in red) is modified.
OK, me I'm very happy with the V850,
if you want to know your effective resolution just post those shots of the chart and I'll tell you. The Epson extracts 135 MPix effective from 4x5" and 240MPix from 5x7". If the SR1 is able to get that effective resolution with a single shot...
Of course with a DSLR you always can stitch crops... in that case you may outresolve the epson for LF, for sure...