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Re: [OM] Kiron 70-150/4.0 One-Touch Macro Zoom-Test Numbers

Subject: Re: [OM] Kiron 70-150/4.0 One-Touch Macro Zoom-Test Numbers
From: GFaulk7376@xxxxxxx
Date: Sat, 4 Sep 1999 17:37:33 EDT
Last week Angel mentioned this lens and I responded with an offer to provide 
Modern Photography's test numbers. Well, here they are. I only reproduced 
some of the results and included numbers for the Zuiko 75-150 for a point of 
reference. I know test numbers tell only part of the story about a lens, but 
they are useful for reference when test methodology remains constant. First 
number is center resolution and second is  the edge resolution.

70mm        Kiron       Zuiko(at 75mm)
F4          54,38       58,32           
F8          68,48       65,41
F16     68,48       56,46

100mm
F4          50,44       54,34
F8          70,56       60,38
F16     63,50       60,43

150mm
F4          45,40       48,30
F8          71,45       60,38
F16     56,45       54,38

As far as contrast numbers, the Zuiko had marginally higher numbers at 75mm 
with the Kiron posting higher numbers at 100mm and 150mm. For those who have 
or remember Mod. Photo. tests, the results for both lenses compare very 
favorably with competing lenses of that time. Incidentally, I don't own the 
Kiron but do own the Zuiko. I have owned a Kiron 28mmF2.0 for years and it is 
a well made lens, but I prefer the Zuiko 28F2.0 for overall performance. The 
Kiron ain't bad, though.
Gary Faulkenberry

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