P3D Re: 7-perf viewer opinions

[Steve Berezin <sbere@xxxxxxxxxxxxx>]

Paul,

The Red button viewer has 44mm focal length lenses.  Although 3mm
doesn't seem like much you may want to consider trying a viewer that has
47mm FL or more. The image will be a bit smaller but the edges will be a
bit more in view.  The Wollensak viewer used 47mm as does the Star D
achromatic that I market. Jon Golden sells viewers that get around the
problem by using larger diameter lenses. 

PABigelow@xxxxxxx wrote:
> 
> Everyone,
> 
> Soliciting opinions on the best of the 7-perf viewers.
> Best for eyeglasses, lenses, usability, and best overall.
> What are all of the FED purchasers using as a viewer
> or is the idea to buy the FED projector?  The FED folks
> might be better off to make a 7-perf viewer.
> 
> In testing with a modified Red-button I find edge
> sharpness a bit lacking with and without glasses and
> corner cutoff using glasses.
> 
> Best regards,
> 
> Paul Bigelow

-- 
mailto:sbere@xxxxxxxxxxxxx
http://www.berezin.com/3d
Steve Berezin
Berezin Stereo Photography Products
21686 Abedul
Mission Viejo, CA 92691
USA


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