It is rather strange, I have never seen a lens tested over 100lpmm in
Pop photo (some recent 10 year's lens test ) and Modern Photography
at:
http://brashear.phys.appstate.edu/lhawkins/photo/mp-zuiko-tests.txt
I have made a test on some Zuikos ten years ago, with the following
lenses tested only the 50/3.5 at F5.6 can resolve to 70lpmm:
16/3.6
24/2
35/2
50/1.4 S/N 3xx,xxx
50/3.5
85/2
135/2.8
Test target: CCITT chart for fax and photocopier.
Illumination: T32 at 45% to target.
OM4Ti on tripod, cable release.
Film: Fuji Velvia
Projection: Leica 255 with Colorplan P2 90/2.5 (project to 100 inch)
Microscope: M6x+WF10 eyepieces.
Apertures tested only wide open and F5.6
C.H.Ling
"John A. Lind" wrote:
>
> At 23:16 10/6/02, C.H. Ling wrote:
> >There is also no Zuiko can reach 120lpmm not to mention together with
> >film, forget about it.
>
> The lowly single-coated 50/1.8 F.Zuiko tests out at 100 lppmm. That
> equates to 200 pixels per linear millimeter. Having owned one that was in
> mint condition until I sold it 20 years later, **all** my other Zuiko
> lenses have noticeably exceeded it. The only lens combination that
> achieved less was a dirt-cheap, no-name, generic two-element 2X
> teleconverter on the back of a single-coated 75-150/4 Zuiko Zoom. No small
> surprise there given the lack of optical quality in the generic 2X TC.
>
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