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Re: [OM] ISO extension tubes

Subject: Re: [OM] ISO extension tubes
From: "Shawn Wright" <swright@xxxxxxxxxxxxxxx>
Date: Mon, 16 Nov 1998 07:26:21 -0800
On 15 Nov 98, at 21:03, Jan Steinman wrote:

> >From: "John Petrush" <petrush@xxxxxxxxxxxxx>
> ...
> >IMHO, you will get better results with a normal lens with a reversing ring
> >and extension than with a normal lens and close-up lens attachments.
> >...With the reversing ring, all body-to-lens automation is lost,
> >leaving you with effectively a preset lens arrangement...
> 
> And how do you accomplish that? I used one of those springy metal pants
> cuffs protector for cyclists to hold in the depth-of-field button, but it
> sure would have been nice if there was some other way.
> 
> Another trade-off of this approach is exposing that sensitive rear element
> to the elements. A scuff on the back is worth three or four on the front,
> in terms of image quality!
> 
> Still, it is inexpensive. I shot macro that way for years until I could
> afford a real macro lens.
> 
A manual 7or 14mm tube will solve both of these problems: it will keep the 
lens stopped down, and provide some protection. I haven't actually tried this, 
but have seen it in a magazine showing an OM-1 with 50/1.8 setup this way.


Shawn & Janis Wright
swright@xxxxxxxxx
http://Zuiko.sls.bc.ca/~swright
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