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[OM] Re: 18mm f3,5 and 7mm extension tube?

Subject: [OM] Re: 18mm f3,5 and 7mm extension tube?
From: "Jay Drew" <dreaded@xxxxxxxxxxx>
Date: Thu, 31 May 2007 19:37:56 -0700
>> is there anyone who tried the 18mm f3,5 with 7mm extension tube? I
>> rather like the wide-angle macro effect of the 21mm in combination
>> with the 7mm extension tube and wonder if a similar effect is possible
>> with the 18mm?

>Not quite the same, but putting a Vivitar 17/3.5 on a 7mm extension 
>tube, it isn't in focus _anywhere_.
>
>There's something weird going on, though, because even though it looks 
>as if the split-image portion of the screen is matching up, the rest of 
>everything is blurry. It's possible that the focal point is inside the 
>lens, of course.
>
>  -- dan

I tried this with a Tamron 17mm.  It does focus, the infinity focus is about 1
1/2 to 2 inches out.  I did mount my 21mm on the extension tube and the area of
focus was larger.  Will it work with a Zuiko 18mm?  Don't know.  If I could
afford an 18mm, would I have the Tamron?

Jay



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