Posted: Tue Jul 23, 2024 9:20 pm Post subject: Can you identify this lens design from 30's? |
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BurstMox wrote:
Hello,
I came across a soviet prototype from 30's with an interesting lens design.
It's a 270mm/4.5 lens that cover a rather large format (6x6 and more). I disassembled it (elements are just screwed, you only need fingers), optical design looks quite simple. I'm rather sure the frontal and last glass is not a doublet, but I can make mistake. All the elements are well spaced. The schema is not super accurate, I made it myself, but these are the right type of glass (plano-convex, positiv meniscus, etc...). The size is also relatively on scale.
#1
At first I thought about Ernostar, but shape of the elements do not really match.
Any idea of western lens that had this optical schema in 30's or earlier?
Thanks! _________________ Pierre
sovietlenses.fr
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