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Hi Quince,

Thanks for your reply, but i'm interested in the exact radius based on the exact base value. Even if the sun lens is marked at 6 base i believe its exact value is different and i just...

Hi Quince,

Thanks for your reply, but i'm interested in the exact radius based on the exact base value. Even if the sun lens is marked at 6 base i believe its exact value is different and i just...

Hello ,

I would like to find out one information about Zeiss plano sun lenses in CR-39 material. I'm wondering what is the exact radius curvature of Zeiss CR-39 plano sun lenses in 6 base...

Hello to all members!

Could someone let me know what is the exact radius curvature of Zeiss plano CR-39 sun lenses in 6 base curvature? I can't find their sun lenses catalogue anywhere.

Thank...