Archived posting to the Leica Users Group, 1999/12/17

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Subject: Re: [Leica] Re: full moon
From: Jerald Rosenfeld <rosenfeld@mpdr0.detroit.mi.ameritech.net>
Date: Fri, 17 Dec 1999 12:07:31 -0800
 
I could not find my 600 MM M lens. I must have misplaced it.

JErry

Bernard Degaute wrote:
> 
> ---------------Original message----------------
> Date: Mon, 13 Dec 1999 14:39:36 -0800 (PST)
> From: Godfrey DiGiorgi <ramarren@bayarea.net>
> Subject: [Leica] Re: Full Moon ...
> 
> With a 600mm lens, the full moon disk at zenith is approximately 10mm in
> diameter on film. Going up to 1000mm will yield a moon nearly 20mm in
> diameter.
> 
> godfrey
> ------------------------
> 
> On the film the size of the full moon disk (as well as the sun) is 1mm/10cm
> of focal length - so 6 mm with a 600mm lens. The height above the horizon
> has no influence.
> 
> Bernard
> 
> bernard.degaute@village.uunet.be