[LRflex] Re: Extension tube question...

on 8/21/05 12:26 PM, David Young at telyt@xxxxxxxxx wrote:

> All:
> While reading Doug Herr's pages on Close Up photography, I noted the sentence
> which says:
> 
> "Early models of the 14158 [3 ring extension tube set] cannot be used with
> R-only lenses but the bayonet flange can be modified to permit R-only lenses
> to fit."
> 
> My questions are two:
> 
> 1) if you haven't got a 3rd cam only (R-only) lens to try (the obvious way to
> tell!), how do you tell if you set is early or late?
> 
> 2) how is this modification made?
> 
> Doug?
> 
> Art?
> 
> Anybody?
> 
> Many thanks.
> 
> David
> 
> David Young,
> Logan Lake, BC   
> CANADA. 
> 


David, if you carefully compare the flanges on the R8 and SL and measure the
inside diameter excluging the three bayonet lugs you should find the R8's is
a slightly larger diameter.

The modification is made by milling the inner rim of the flange.

Doug Herr
Birdman of Sacramento
http://www.wildlightphoto.com


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