01-23-2017, 11:46 PM
Quote:Oh how ironic the world can be, while we're talking about large aperture F mounts.I think you are not taking into account lens design? The Canon lens is a very old design, going back to the end of the 1970's. That the current Canon with basically the same design, just a bit bigger back element, vignets a lot, it still vignets less than the smaller mount diameter Canon FD relatives. There is more than one variable in vignetting.
Lenstips review of the Mitakon 85mm F1.2 in the Nikon mount... the Mitakon's vigneting..I quote:
"Employing the maximum relative aperture you have to take into account the loss of 45% of light (âˆ’1.73 EV) in the frame corners. It is not a low value but still the Mitakon is better than the Canon which lost as much as 51% of light. By f/1.4 the vignetting decreases to 40% (âˆ’1.49 EV). Once again that value is quite high but you should remember that the huge Otus by f/1.4 lost as much as 56% of light!"
Out bayoneted the Nikon F mount? No........ how's that for a rabbit out of the hat-trick?
The 55mm f1.2 lenses I have (you have) also a lot.
So yes, the 105mm f1.4 Nikkor vignets a lot due to the narrow mount's design limits. The Samyang 85mm f1.2 Vignets less than the Mitakon due to the wider mount diameter.