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Re: [OM] 28 f2.0

Subject: Re: [OM] 28 f2.0
From: "Giles" <cnocbui@xxxxxxxxxxxxx>
Date: Mon, 11 Jan 1999 22:30:37 +0000
I have the 24mm f2 and find it an excellent lens.  However, if the test figures 
given below can be trusted, the 28mm f2 is even better and is one of the very 
best of it's type compared with other manufacturers.  Given that it is listed 
as 
the same price as the 24mm f2 and nearly as much as the 300mm f4.5, it ought to 
be good!

Giles

The following test results are courtesy of Richard Schaetzl:
..................................................................... 
The quality numbers for sharpness and contrast are basing on MTF 
measuring. The maximum number for sharpness, contrast is 30, for 
centering is 20 and for distortion, vignetting is 10, max. total is 
100.
Based on  lens tests by the Magazin Color Foto, published in 5/96,
11/97 and 12/97.

Lens                  Sharp- Contr- Center- Distor- Vignett- Total  Test in
                         ness    ast      ing       tion      ing

Olympus Zuiko   17,8     22,7    17        7          6         70,5  11/97
2/24mm

Pentax-FA          18,1     21,7    14        6          6         65,8  11/97  
2/24mm AL IF

Olympus Zuiko   18,9     23,1    18        8          9          77    5/96  
2/28mm

Olympus Zuiko   18,2     23,3    19        8          6       74,5   11/97   
2/28mm

Canon EF          17,2     20,9    15        7          6        66,1   11/97  
1,8/28mm

Canon EF          18,3     22,8    16        8          9       74,1    5/96   
1,8/28mm

Minolta AF        17,9     22,7     14        8          6       68,6   11/97   
2/28mm

Minolta AF        19,1     23,4     16        9          9       76,5    5/96   
2/28mm

Minolta MD-     18,4     23,2     20        9          6       76,6    11/97   
Rokkor 2/28mm

Nikon AF-        18,6     23,1     17        8          8      74,7      5/96   
 
Nikkor 1,4/28mm

Sigma AF        15,6     19,1     14        8          6      62,7     11/97    
1,8/28mm Asph. II ZEN

.....................................................................

Test results for the Zuiko 24mm f2 - courtesy of Lee Hawkins site.
-------------------------------------------------
24/2 MC - Pop. Photo (7/84 p. 65): 
Actual: 24.73/2.06, Distortion: above average barrel
Centering: near-perfect, Flare: 0.6%, Transmission: 94%
Percent contrast of 0.01mm slit image:
 f                2     2.8     4       5.6     8
Center            51    76      82      83      83
1/3rd out       50      67      68      67      66
2/3rds out     44       51      55      50      55
Far edge        40      41      55      70      69
-------------------------------------------------

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