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Re: [OM] Zuiko 50 1.4 vs 50 1.8

Subject: Re: [OM] Zuiko 50 1.4 vs 50 1.8
From: "Tom Scales" <tscales@xxxxxxxxxxxxx>
Date: Thu, 27 Sep 2001 06:01:10 -0500
No, no personal direct comparisons, just from experience, information on the
lists, and, most importantly, Gary Reese's lens tests which I will quote
here, without permission.  Not the progression from D Grade, to C Grade to B
Grade at f/1.4 through the three formulations.

In real life, though, the differences are much more subtle. All are fine
lenses.

Tom

50mm f/1.4 Zuiko (single-coated)
OM-1 with mirror lockup
Vignetting = C
Distortion = slight pincushion
Aperture  Center    Corner
f/1.4     D         C-
f/2       C-        C
f/2.8     C         B-
f/4       B-        B
f/5.6     B         B
f/8       B+        B
f/11      A-        B
f/16      A-        B+
Notes: Serial number unknown.


50mm f/1.4 Zuiko (multi-coated)
OM-2000 with mirror and diaphram prefire; lens with <1,000,000
serial number
Vignetting = D @ f/1.4, B @ f/2, A- @ f/2.8, A @ f/4
Distortion = slight barrel
Aperture  Center    Corner
f/1.4     C         C
f/2       B         B
f/2.8     B+        A-
f/4       B+        A
f/5.6     A-        A-
f/8       A-        A-
f/11      B+        A-
f/16      B+        B+
Notes: Moderately high contrast, except moderately low at f/1.4,
moderate at f/1.4.


50mm f/1.4 Zuiko (multi-coated)
OM-2000 with mirror and diaphram prefire; lens with >1,100,000
serial number
Vignetting = D @ f/1.4, B @ f/2, A- @ f/2.8, A @ f/4
Distortion = none

No filter
Aperture  Center    Corner
f/1.4     B         B
f/2       A-        B
f/2.8     A         A-
f/4       A         A
f/5.6     A         A-
f/8       A-        A-
f/11      A-        A-
f/16      B+        B+
Notes: High contrast, except moderate in center at f/1.4, moderately low
in corners at f/1.4 and moderate in corners at f/16; remarkably even
performance across all apertures.

----- Original Message -----
From: "Angel Lobo" <angel.lobo@xxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Thursday, September 27, 2001 1:47 AM
Subject: RE: [OM] Zuiko 50 1.4 vs 50 1.8


Tom Scales wrote:

> 50/1.8 - around $20
> 28/3.5 - around $40
> 50/1.4 - around $45-70 (depends on serial number >1,100,000 are the best).


Tom, why the best ?

This is an old matter.

Do you have a test side by side of the lenses 1.4 MC  >1000xxx vs 1.4MC
<1000xxx on a normal landscape,  street scene, etc ?

Ángel Lobo.
Cuenca  ( Spain ).


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