Jörg Krüger
135 mm Lens Comparison, Border
135 mm Lens Comparison, Border
Sample pictures of this group of lenses. The same chart for the center, where is also a description of the set-up.
The black dot in the white rectangle displays the size and the position of the crop.
The focusing was done seperately for the border, so you have no conclusion regarding the field of curvature.
Funny: apart from the Isco every lens is showing vignetting wide open, which almost disappear when stopping down exactly one f-stop. Also somewhat weird: the trio zoom/Tokina/Porst seems to have a better rendering at the border than in the center wide open. All lenses are showing lateral color aberrations (red/green at the "GFA"), which don't disappear when stopping down. Wide open CAs are low at the Pentacon, but the GFA letters are colored blue also here. Like reported on many Pentacon/Sonnar comparisons, the Pentacon is soft at the border. I think it softer at f2.8 than the zoom lens at f4.
It is really hard to name the best performer here. I like the Mamiya, but the Isco is also fine in its way: not very contrasty but very homogeneous.
135 mm Lens Comparison, Border
135 mm Lens Comparison, Border
Sample pictures of this group of lenses. The same chart for the center, where is also a description of the set-up.
The black dot in the white rectangle displays the size and the position of the crop.
The focusing was done seperately for the border, so you have no conclusion regarding the field of curvature.
Funny: apart from the Isco every lens is showing vignetting wide open, which almost disappear when stopping down exactly one f-stop. Also somewhat weird: the trio zoom/Tokina/Porst seems to have a better rendering at the border than in the center wide open. All lenses are showing lateral color aberrations (red/green at the "GFA"), which don't disappear when stopping down. Wide open CAs are low at the Pentacon, but the GFA letters are colored blue also here. Like reported on many Pentacon/Sonnar comparisons, the Pentacon is soft at the border. I think it softer at f2.8 than the zoom lens at f4.
It is really hard to name the best performer here. I like the Mamiya, but the Isco is also fine in its way: not very contrasty but very homogeneous.