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Re: [OM] Extension ring for 1:1?

Subject: Re: [OM] Extension ring for 1:1?
From: "Terry and Tracey" <foxcroft@xxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 17 Sep 1998 19:28:39 +1000

>I was wondering what size extension ring you need for 1:1 closeups?
>Thanks, John.


For a 50mm lens, you need 50mm of extension. For a 90mm lens, 90mm
extension. You can get extension by adding tubes and/or winding out the
focussing. The 50mm macro lenses focus out 25mm, giving 1/2 life size. Add a
25mm tube and 1:1 is obtained.

Foxy


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