If the comparison is Canon on 80 MP vs Nikon on 36 or less I would say that's not the best example. The IQ180 with a Canon 17 or 24 fully shifted will be very taxing on the lens.
Alpa has many good examples that show the 17 Canon on the 50MP Phase IQ250 and here it seemed to do very well
It's always best to test for yourself and lensrentals.com makes this very easy to do.
Paul,
Definitely agreed - different scenes, focus distances, lighting, field curvature, unknown variables, etc. etc. I just thought it’d be interesting to lay a handful of nikon images over the canon on a high-res large sensor to see if any general characteristics appeared.
My experience the the Canon TS-E24II was all on the Canon 5D-MKII and MKIII. I saw excellent performance on full shifts of 12mm from F6.3 to F11. What light fall off there was easily corrected by taking an LCC frame on shifts and using Capture One to correct the files.
I tried 3 of the Nikon 24 PC-E lenses on a 36MP D800. None of them were close on shifts to what I had been able to get with the Canon. I realize that the Canon was 20MP, however the Canon has performed very well on the 50MP backs. Others have had better results however foe a 2K lens I excpected better. The Nikon is the same lens that has been on the market for 5 years or longer. It just needs an update.
This gets stated a lot online, but the difference in sensor density is significant. Canon is 22MP, N/S is 36MP, IQ180 is 32MP in a 35mm area. So, a shifted 36MP FX sensor shows the highest pixel density in the outer image circle. (A shifted 24MP DX sensor won’t get as far from center.)
In Chrismuc’s IQ180/PCE24 sample, I see a clear falloff in sharpness ~30mm from center (60mm image circle). With my Nikon samples, a similar falloff happens ~27mm from center (54mm image circle). The Canon’s illuminated area is much larger, but the sharp image circle is only ~3mm larger each way. Again, rough numbers based on uncontrolled comparisons.
The price/quality is what it is. The Nikon works well within it’s good range - the Canon has a wider range, but could be better as well. I’d pay Otus prices for a 24mm shift lens that eliminated the weaknesses at the edge of shifted frames.