Re: atm Oily optics

Bratislav Curcic (epabcc@epa.ericsson.se)
Thu, 3 Aug 95 09:30:13 EST

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Careful here ! If that old 60mm with "unbloomed" objective is what I'm thinking of (a Russian 60mm f/10), it's lens is a real Fraunhofer design, where R2 <> R3, and where air space _IS_ a calculated optical element (and R4 is _very_ slightly convex). You might be suffering addittional chromatic and spherical aberrations because of that. Do some star testing before/after.

Bratislav

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