Subject: Re: Telescopes
Date: Jun 10 13:07:36 1998
From: Don Baccus - dhogaza at pacifier.com
At 02:47 PM 6/10/98 EDT, you wrote:
>First, the APO appeared to be grayer and more true to color than the non-APO.
>Secondly, the APO had a significantly greater depth of field than the
non-APO.
>For both the Kowa and Swarovski I focused on a bird feeder with a chain-link
>fence behind it. The APO scopes allowed the fence to be in focus, but the
>fence in the non-APO scopes was so out of focus it was close to invisible.
This makes no optical sense. Depth-of-field is dependent on aperture, not
sharpness. There must've been other differences, i.e. different objective
magnification or perhaps comparing an 80mm scope with a 60 or 70 mm scope?
- Don Baccus, Portland OR <dhogaza at pacifier.com>
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