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mak

14 Ian 2011 17:56



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Tot citind in stanga si in dreapta pe net, am vazut ca si Robert Royce a construit practic un obiectiv de genul asta. Pun mai jos raspunsul pe care l-am primit de la el.

"I spent a lot of time of these objectives and have come to the conclusion that they are not stable. The idea is a nice one but I think if I make them they will be a constant source of trouble. After several years the oil starts to deteriorate. The only oil that really works well is the EC12 by Cargille and this will change over time and crystallize and get cloudy. Ethyl cinnimate just does not give that much added correction."

Sa fiu sincer, ma gandeam ca trebuie sa fie un clenci pe undeva, altfel am fi vazut mai multe obiective de felul asta. Eu ma gandeam mai degraba ca tolerantele de fabricatie sunt foarte mici.

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