[photo-3d] Re: Tri-Delta Prism adapter

[penultimate@xxxxxxxxx]

--- In photo-3d@xxxxxxxxxxx, Peter Davis <pd@xxxx> wrote:> > I just got my hands on a Tri-Delta Prism stereo adapter.  However,I can't > find any way to attach this to my SLR.  The threads on the adapterseem to > be about 32mm.  Is there a 52mm-32mm step-down adapter?  In anycase, won't > this thing vignette like crazy if it so much smaller than the lens?I have had a Tri-Delta beamsplitter since 1973.  A "custom ring" wassupplied with the original unit which adapted the unit to the threaddiameter of your normal lens.  The threads on the beamsplitter itselffit a SERIES V (5) filter holder.  If you cannot obtain a 52mm customring, then you will have to find a way to go from 52mm to series V. I suggest you call B&H photo in NYC and see if they can help.  I havehad luck in finding odd-sized filter adaptors there.  You may evenhave to use more than one adaptor to get to where you want to be.  Asfor vignetting, the custom ring is flat and causes no vignetting atall, but you may run into problems if an adaptor(s) moves thebeamsplitter further from the front of the lens.Hope this helps.Dukemy 3-D page: http://www.angelfire.com/on/theduke/3-D.html     


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