Well, either way, I shot it exclusively at f/8 as I found it was
sufficient for DOF.
On Fri, 11 Feb 2000, Keith (R.K.) Berry wrote:
>Clearly something's changed. This is what I downloaded from Gary's site a
>few months ago:
>
>28mm f3.5 Zuiko (single-coated)
>Vignetting = B- at f4, B at f5.6, B+ at f8
>Distortion = moderate barrel
>Aperture Centre Corner
>f3.5 C+ C
>f5.6 B A-
>f8 A- A
>f11 B+ B
>f16 B+ B
>
>"Note: Low contrast image at f16, f11, f4, although high resolution of high
>contrast details at centre of field; moderate contrast at mid apertures;
>optimum at f8."
>
>"This has always been my least favourite Zuiko and I now know why. While
>capable of decent images, only f8 is pro calibre. Performance falls off
>either side of f8, although moderate contrast is held at f5.6. Especially
>troubling is the lack of contrast at f16, f11, and f4. Images are downright
>flat and easily the poorest of any Zuiko tested to date."
>
>Regards,
>Keith Berry (Birmingham, England)
>
>
>Siddiq wrote:
>
>>Not so says the site:
>>28mm f/3.5 Zuiko (single-coated)
>>minty sample; OM-1 with mirror lockup
>>
>>Vignetting = B @ f/2.8, A- elsewise
>>
>>Distortion = slight barrel
>>
>>Aperture Center Corner
>>f/3.5 B+ B-
>>f/5.6 B+ B+
>>f/8 A- A
>>f/11 A- B+
>>f/16 A- B+
>>Note: Moderately low contrast @ f/3.5, moderately high
>>contrast elsewise.
>
>
>
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/Acer V
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