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Stane Crnjak @staneC 13. Sep 2007, 11:15

Fluiritne leče in UD leče ni isto.

What is Fluorite?
That fluorite has an unusual dispersion characteristic not found in optical glass, which can be used to remove chromatic aberration and was discovered by Abbe (1840-1905). At the time, natural fluorspar crystals were used, so applications were limited to small diameter lenses of microscopes. The possibilities of fluorite were noted early at Canon, and research aimed at making artificial crystals resulted in successful commercial lenses. Optron, a Canon affiliate, is one of the few companies that mass-produce fluorite. Fluorite is used in the focusing groups of zoom lenses to correct chromatic aberration on the telephoto side. It is particularly effective in correcting secondary spectrum aberrations.
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Stane Crnjak @staneC 13. Sep 2007, 11:24

Bom kar nehal, če ne me bo Fotokaj razčlenil kot Focusa laugh
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Primož Žgavec @Primozz_MIXI 13. Sep 2007, 11:36

ja v knjigi THE EYE OF EOS je to tako predstavljeno! cry confused

to je pa iz ene stare enciklopedije o goriščnicah ipd.

http://books.google.com/books?id=CU7-2ZLGFpYC&pg=PA432&dq=Fluoride+lenses&ei=DRPpRofWAoXy6gKc2fkD&sig=aWq0jb8coACWZ9A3AeONB9953W4#PPA435,M1
SONY je še edino upanje za nas Minoltaše!
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Primož Žgavec @Primozz_MIXI 13. Sep 2007, 11:58

pismo!!!!!! skenslal so strani od 200-400 sleep
SONY je še edino upanje za nas Minoltaše!
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Peter @Focus 13. Sep 2007, 15:09

Tako se razpravlja.
Bravo Primozz_MIXI in StaneC!

Pri fotokaju (z malo pisanim) ne gre za razčlenjenje, ampak za veliko mlačev, ki zrna in kruha žal ne daje. biggrin


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