Marked "MacIntosh stereoopticon" looks to be two opposing plano-convex (I I) , from a long ago ebay buy which I robbed for the #5 universal shutter but now I'm thinking of using. Could it be an ellusive swirly petzval? Or is it a merely a pretzal?
Marked "MacIntosh stereoopticon" looks to be two opposing plano-convex (I I) , from a long ago ebay buy which I robbed for the #5 universal shutter but now I'm thinking of using. Could it be an ellusive swirly petzval? Or is it a merely a pretzal?
"I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority"---EB White
The design sounds like a Rapid Rectilinear to me. Is it about f8?
Jason,
Not sure--there isn't any slot for waterhouse stops or any other markings.
Thanks!
"I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority"---EB White
Double simple meniscus? Stereopticon was some sort of a magic lantern I think. Put it back in the shutter and go make some pictures. Your assignment for tomorrow. Then post a couple so we all can see what it does.
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