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  1. It is in English (unsure if they've written in...

    It is in English (unsure if they've written in other languages) and it is quite dense conceptually but also mathematically. They make use of the matrix formalism - hence linear algebra. In terms of...
  2. You definitely need a solid foundation in linear...

    You definitely need a solid foundation in linear algebra in order to just read this thing. Just bought the book myself.
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    Degressives and frame choice

    Hi all,

    How different are the iso-astigmatism plots between degressive and progressives?

    And given that the reference power in degressives is the combined near add - is there more control over...
  4. Thread: Crizal Rock

    by eyemechs
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    7,332

    Any updates on findings? Also, would Diamond...

    Any updates on findings? Also, would Diamond Finish be the Oceania equivalent of EX3 for Hoya?
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    So instead of rick-roll, we have blue-roll?...

    So instead of rick-roll, we have blue-roll? Amirite?

    I must say, I didn't expect this sort of trolling from experienced posters (thank you for these unbelievable non-lenticular looking...
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    Hi Drk. I don't know if there is a way to deny or...

    Hi Drk. I don't know if there is a way to deny or confirm to you but certainly not a consumer and will be contributing to the forum where I think I'm worthy of contribution.
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    This is late to the party, but would you happen...

    This is late to the party, but would you happen to still have that formula or an updated one, MakeOptics?
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    Changing designs based on use case

    Hi everyone, first time poster here.

    We have a PAL wearer who splits his time between outdoors (driving, visiting construction sites, etc) and indoors (on PC looking at spreadsheets, etc) quite...
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