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Re: Belplasca Marries Supermodel?

  • From: bercov@xxxxxxxxxx (John Bercovitz)
  • Subject: Re: Belplasca Marries Supermodel?
  • Date: Fri, 24 Nov 1995 12:23:59 -0800
That was weird.  My computer bombed and netcom posted.  Never had
that happen.  Anyhow, here we go again and I'll skip the prologue.

John B

Belplasca res test       April 1994
Film: Kodachrome ASA 25
 
                            radial              circumferential
f/stop  lpmm in the center  lpmm in the corner  lpmm in the corner
 
4          48                   54                  38
5.6        61                   54                  54
8          61                   61                  61
11         61                   61                  54
16         48                   48                  48
 
============================

For reference: 
Canon SLR lenses (cheap versions)    Nov 93
Film: Kodachrome ASA 25
 
35 mm FL,      F/2.8
S/N 179,360
        Opening    center  2/3 of way to corner
        F/4          48         54
        F/5.6        61         61
        F/8          68         61
        F/16         48         54
        F/22         48         38
 
50 mm FL,    F/1.8
S/N 853,326
        Opening   center   2/3 of way to corner
        F/5.6       59         66
        F/8         59         59
        F/13.5      66         59
        F/16        59         66
 
 
100 mm FL,   F/2.8
S/N 65,287
        Opening   center   3/4 of way to corner
        F/6.7       56         56
 
============================
 
FED res test       Sept '93
Film: Kodachrome ASA 25
 
f/stop      lpmm in the center   lpmm in the corner
 
5.6               72                 36
8                 64                 45
11                64                 40
16                72                 40
 
============================
 
Kodak res test       April 1994
Film: Kodachrome ASA 25
 
        radial              circumferential
f/stop  lpmm in the center  lpmm in the corner  lpmm in the corner
 
5.6       60                  --                        --
8         68                  24                        24
16        60                  38                        21
 
============================
 
The Kodak and common Realist lenses are purported to be equal.



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End of PHOTO-3D Digest 1066
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