[Jewelry making - Article 00506] - Re: [Orchid] Microscope systems

[James Binnion]

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    Marc, 	The loupes you tried are Galilean type not the prism type that
    Doug and I are referring to. There is no comparison between them. The
    Galilean type are like a stronger Optivisor with all the spherical
    aberration and minimal depth of field that you get in a high
    magnification Optivisor. To quote from the  Ziess website"In Prism
    Loupes, as magnification increases, optical quality remains
    excellent, unlike Galilean loupes, which exhibit optical aberrations
    at magnifications higher than 3x. Even at magnifications of 5x or 6x,
    the prism loupe image is completely flat and sharp from edge to
    edge." If you decide to look at binocular loupes again find a
    manufacturer of prism type loupes to try out. Most of them will
    either have a salesman come by or send you a set to try out. 

Jim
James Binnion Metal Arts
http://www.mokume-gane.com
jbin AT mokume-gane.com
Member of the Better Business Bureau

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