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[OM] Tamron 90mm 2.5 lens

Subject: [OM] Tamron 90mm 2.5 lens
From: "norman dudman" <nor_45@xxxxxxxxxxx>
Date: Thu, 20 Jan 2000 10:44:58 GMT
Can any Olympians on the list help with information on the Tamron 90mm 2.5 macro adaptall 2 lens (early version with 49mm filter thread) I want to use it at 1:1.

1/Does the 2x flat field converter use a lens in its  construction?
2/Would I get just as good a result with a 45mm extension tube?
3/Am I correct in assuming 45mm extension added to the 45mm rack of the lens will give me 1:1?
4/What about using a Vivitar 2x converter to get 1:1?

Thank in anticipation.
Norman Dudman
UK


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