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Re: MF Expo

  • From: Dennis Selwa <dselwa@xxxxxxxxxxxx>
  • Subject: Re: MF Expo
  • Date: Fri, 30 Apr 1999 17:43:30 -0700
 Greg,
 The lens wasn't designed from the ground up. Two dublets were mounted in a
barrel in what is called a symetrical arrangement.The two dublets were
chosen from a stock assortment by some guy in cherry hill NJ--I forget his
name. Supposedly it is better than just a single doublet.I guess its
possible to engineer the optimum lens and have them ground and cemented but
it would be quite expensive. It would be nice to talk to a real optics
engineer and find out what the state of the art is capable of.
 You dont see any real wide eyepoint lenses.I guess there are limitations
on wideness of apparent view without distortion.

Dennis