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Re: [OM] Vivitar 28-90

Subject: Re: [OM] Vivitar 28-90
From: John Gaasland <kayak@xxxxxxx>
Date: Thu, 17 Dec 1998 21:59:52 +0000
WKato@xxxxxxx wrote:
> 
> In a message dated 98-12-17 10:37:38 EST, you write:
> 
> << I was wondering if anyone has tested or seen a test on the Vivitar
>  35-85/2.8 series 1? I have one, and it seems very sharp. John.
> 
>   >>
> There's a test in the 1/76 Modern Photo. They found the sharpness
> indistinguishable form single focal length primes. The only big problem that
> they had with the lens was the flare. They advised that the special hood be
> used at all times. (Herr Schloss sold me mine.)  For each f stop: Center
> sharpness/corner sharpness/center contrast/corner contrast are as follows:
> 35@2.8 46/32/36/22; @4 41/26/62/25; @5.6 46/32/70/33; @8 58/41/69/40; @11
> 65/48/66/44 @16 58/46/57/39
> 55mm@2.8 45/36/26/33; @4 57/45/34/39; @5.6 57/45/59/61; @8 57/45/62/66;
> @1164/51/63/59; @16 57/45/58/52;
> 85mm@2.8 45/32/50/19; @4 45/36/52/24; @5.6 57/32/50/32; @8 64/40/52/43; @11
> 64/40/52/46; @16 51/36/46/40
> Sharpness was generaly excellent to very good at most apertures and contrast
> was medium to high at most aperatures.  Generally highest sharpness and
> contrast were at f8 for all focal lengths.
> 
> Warren Kato

Thanks Warren. What hood are you referring to? I saw one that had an
original plastic hood, but it looked like it would only be effective at
35mm. Thanks, John.

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