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[OM] Some Nikkor tests

Subject: [OM] Some Nikkor tests
From: PCACala@xxxxxxx
Date: Sat, 6 Nov 1999 04:15:21 EST
Previously I only looked at Canon and Leitz  lenses in the "Other Camera 
Manufacturer" section of the Zuiko Lens Test page.  I tested two Nikkors that 
are well known as fine lenses and will have these uploaded in a few days.  
Meanwhile, here is a preview which some might find interesting in relation to 
Zuikos.

The 45mm f/2.8 GN Nikkor was their pancake lens.  It isn't (or at least this 
sample of an early production one isn't) as good as the 40mm f/2 Zuiko . . .

Nikon Nikkor 45mm f/2.8 GN Nikkor (non-AI, pre C model)
Vignetting = B@f/2.8
Distortion = None
Aperture  Center    Corner
f/2.8     C         C+
f/4       B         B-
f/5.6     B         B
f/8       B         B
f/11      A-        B+
f/16      B+        B
f/22      B-        B-
f/32      B-        C+
Note: Moderate contrast throughout.

While we don't have a test for the 50mm f/1.2 Zuiko up yet, here is what it 
will have to beat to best the current production model Nikkor 50mm f/1.2.  
Note that the Nikkor looks quite a bit better at larger apertures than the 
55mm f/1.2 Zuiko, but then the Zuiko was tested on a OM-1.

Nikon Nikkor 50mm f/1.2 AIS
Vignetting = C@f/1.2, B-@f/1.4, B@f/2, A-@f/2.8, A@f/4
Distortion = none
Aperture  Center    Corner
f/1.2     A-*       B-*
f/1.4     A-*       B-*
f/2       A-        B-
f/2.8     A-        B+
f/4       B+        A-
f/5.6     B+        A-
f/8       B+        A-
f/11      B+        B+
f/16      B+        B+
Note: Overexposure for tests at f/1.2 and f/1.4 (marked as *) make these SQF 
grades provisional.  Resolution was high in the center for f/1.2 and f/1.4, 
but contrast determination was impossible. Moderate contrast at f/2 through 
f/16.

Gary Reese
Las Vegas, NV

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