But I think some zuikos play focal length tricks as they close-focus. They
shorten the focal length You may be able to get away with less extension.
Anyone know for sure?
tOM
On Sunday, August 11, 2002 at 18:32, Buddy Walters
<olympus@xxxxxxxxxxxxxxx>
wrote re "RE: [OM] 90/2 - Gorgeous!" saying:
> Hi Chris,
> Since I didn't see a response to your question, I'll give it a shot.
>
> You need the same mm extension as the mm of the lens to get to 1:1 or as
> I would say 1x magnification.
> So with a 90mm lens you need 90mm of extension. But the 90mm f2 macro
> already has 45mm of extension built in (which gives it 1/2x mag) so all
> you need to do is add another 45mm of extension ie bellows or extension
> tubes to = 1x mag.
>
> Hope this helped.
> Buddy Walters
>
>
> -----Original Message-----
> On Behalf Of Chris Barker
> Subject: Re: [OM] 90/2 - Gorgeous!
>
> Lovely photo Richard1
> I plan to take more photos of parts of flowers, in the abstract
> sense, rather than trying for a complete shot all the time.
>
> Do you know what length of extension tube is required to get 1:1 with
> the 90/2?
>
> Chris
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tOM Trottier, ICQ:57647974 http://abacurial.com
758 Albert St, Ottawa ON Canada K1R 7V8
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"The moment one gives close attention to anything,
even a blade of grass, it becomes a mysterious,
awesome, indescribably magnificent world in itself --
Henry Miller, 1891-1980
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