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Forum: Optics Theory - 02-06-2019
Replies: 57
Views: 3,210
Posted By markbakovic
It'd still have to be two different plastics to...

It'd still have to be two different plastics to have two different refractive indices, but if, say, the original cemented pair was two glasses with (probably high) dispersion characteristics that...
Forum: Optics Theory - 02-06-2019
Replies: 57
Views: 3,210
Posted By markbakovic
that looks a bit like cavity resonance to me a la...

that looks a bit like cavity resonance to me a la Fabry-Perot, like a surface pair is locally close to plane parallel. If so that might be unavoidable with the geometry in question. (I say this in...
Forum: Optics Theory - 02-04-2019
Replies: 57
Views: 3,210
Posted By markbakovic
well that was... bracing. Thank you to the...

well that was... bracing.

Thank you to the honest respondents to a poll about what camera equipment consumers glean from camera equipment manufacturers' branding.

To the others, thank you for...
Forum: Optics Theory - 02-04-2019
Replies: 57
Views: 3,210
Posted By markbakovic
What does ASPH mean to you?

I don't mean "Is the Leikor Bloktron 42mm 1.3 ASPH a good lens?", I mean what do you understand about "aspheric" *photographic* lenses? What are they for AFAYK? Are there pros and cons? What level of...
Showing results 1 to 4 of 4

 


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