What kind of lens combinations best for loupe'?
- From: Eric R Snow <etpm@xxxxxxxxxxx>
- Date: Wed, 04 May 2005 16:32:55 -0700
Greetings All,
I'm a machinist by trade and know very little about optics. I do know
when using a simple lens that as magnification rises depth of field
drops. However, looking at optics catalogs are lense systems that work
better, a Hastings Triplet for example. But the Hastings Triplets I
have seen have been considerably heavier for the same magnification
than a simple lens. No surprise of course, it's a triplet. I use the
type of loupe' that you screw into your eye socket most of the time so
the extra weight may be a problem. So since I'm going to be making
some of my own, for practice spinning the metal, I was hoping there
might be some kind of compromise between the simple lens types and the
heavy triplets. Any help is greatly appreciated. I might even be able
to make a custom loupe' for someone.
Thanks,
Eric R Snow,
E T Precision Machine,
Maybe someday Precision Spinning, or at least arty spinning.
.
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