Resolution (f16)

Zones A/B at f16
Nikon 35mm Shift lens at f16 Olympus 35mm shift lens at f16 Contax 35mm PC-Distagon Zone A f16
Nikon 35mm PC Nikkor
at f16 (centre)
Olympus 35mm Shift
at f16 (centre)
Contax PC Distagon
at f16 (centre)
4.5 points
4.75 points
4.75 points

With diffraction a major influence on resolution at f16, the Olympus and Zeiss shift lenses start to look at bit the Nikon. Still the Zeiss gives that little bit more than the others in Zones A and B, though.

Zone C at f16
Nikon 35mm PC Corner Sample at f16 Olympus 35mm Shift Corner Sample at f16 Contax 35mm PC-Distagon Zone C at f16
Nikon 35mm PC Nikkor
at f16 (Zone C)
Olympus 35mm Shift
at f16 (Zone C)
Contax PC Distagon
at f16 (Zone C)
4.5 points
4.75 points
4.75 points

The stronger microcontrast of the Distagon’s T* coating has pulled a little more information out of the wood sections here, but there’s the merest fraction more in the shadows in the Olympus capture, which in turn is now comfortably ‘sharper’ than the PC-Nikkor.

Zone D at f16
Nikon 35mm PC Extreme Corner Sample at f16 Olympus 35mm Shift Extreme Corner at f16 Contax 35mm PC-Distagon Zone D at f16
Nikon 35mm PC Nikkor
at f16 (Zone D)
Olympus 35mm Shift
at f16 (Zone D)
Contax PC Distagon
at f16 (Zone D)
4.5 points
4.75 points
4.75 points

At 10mm shift, the outermost parts of Nikon’s Zone D are still a no-show and the additional stop has done nothing to improve the corresponding behaviour of the Olympus or the Contax lens: both are still eminently useable at this aperture, and produce unimpeachable, monster stitched files, but f11 can probably be considered the acme of their performance: you’ll only stop down this far to slow the shutter or gain a little extra depth of field. At least it’s safe to do so . . . .