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[OM] Re: OLYMPUS A MACRO H.O. CONVERTER?

Subject: [OM] Re: OLYMPUS A MACRO H.O. CONVERTER?
From: "Darin" <d.rhein@xxxxxxxxxxx>
Date: Tue, 13 Feb 2007 14:11:17 -0800
Thanks for the info guys!

Darin

----- Original Message ----- 
From: "Moose" <olymoose@xxxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Tuesday, February 13, 2007 12:32 PM
Subject: [OM] Re: OLYMPUS A MACRO H.O. CONVERTER?


> Piers Hemy wrote:
>> It's a typo.
>>
>> Try iS/L Lens A-Macro H.Q. Converter f=40cm for the iS/L series:
>>
>> http://zuserver2.star.ucl.ac.uk/~rwesson/esif/om-sif/is-series/is-series.htm#iS/L_Macro_Converters
>>  
>> <http://zuserver2.star.ucl.ac.uk/%7Erwesson/esif/om-sif/is-series/is-series.htm#iS/L_Macro_Converters>
>>
>> But would likely work with any 49mm filter fitting on (eg) a 50mm lens
>>
> Indeed it does work on any lens with a 49mm thread. Two element
> converters like this are far less common but optically superior to the
> usual single element close-up lenses (now often, and incorrectly, called
> close-up filters on ePay.) Oly only made the single element "Close-up
> Lenses 49mm f=40cm / 55mm f=40cm" for OM, but went with the more
> sophisticated two element designs for the multi element zooms of the IS
> Series and they may be used with OM and any other lenses which they fit.
>
> Most C-U lenses are marked in diopters, +1, +3, etc. Oly had to go
> another way, of course, making theirs with a 40 cm focal length, with is
> +2.5 diopter.
>
> There are still a few sources for two element designs from folks like N
> and C in other filter sizes. I also have an N in 62 mm that fits one of
> my EF mount lenses and the Tamron 35-80/2.8-3.8 - but always seem to
> have forgotten it when I need it. :-(
>
> Moose
>
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