Here's another use: the OM 1.4X-A teleconverter has a projecteing element
on the front which prevents mating with most lenses that have rear elements
near the mount. My Sigma 400/5.6 is such a lens, but by placing a 7 mm
extension tube between the lens and the 1.4X-A, it all fits. I can't focus
at infinity, but i can still focus quite a ways out. Gary Falkenberry told
us about this technique, and it allowed me to get this shot:
http://members.home.com/maitani/owl.htm
By the way, did the uncivilized few on this list run Gary F. away?
Barbatus
----- Original Message -----
From: NSURIT@xxxxxxx
To: olympus@xxxxxxxxxxxxxxx
Sent: Friday, September 21, 2001 6:09 PM
Subject: Re: [OM] Extension tubes
This reminds me a bit of the old days when many lenses were not automatic
and you would have to go through the process of focusing wide open and then
have to close the aperature down for proper exposure. Another aside is that
these extension tubes are not just for focusing on stuff up close as in
macro. This morning I was trying to take some pictures of a hummingbird
which has been perching on a limb in a vine in my back yard. I put a 25mm
extension tube on my 400mm Zuiko to allow me to focus closer than this lens
would normally allow. I was still a good man feet from the subject. Bill
Barber
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