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Re: [OM] 200/4 vs. 2X-A (Was 100/2 vs. 85/2 in sharpness)

Subject: Re: [OM] 200/4 vs. 2X-A (Was 100/2 vs. 85/2 in sharpness)
From: frieder.faig@xxxxxxxxxxxxxxxxxxxxxxxxx
Date: Sat, 14 Jul 2001 10:52:40 +0200
On Thu, Jul 12, 2001 at 05:01:59PM -0500, gries wrote:
> How large was the sun in the viewfinder?
> 


Rule over the thump: 
a) Sun and moon aper in the same visible size. (this is  why moon an solar 
eclipe work).

b) With a 50 mm lens (shot taken on earth)  both have 1mm size in the negative.
400mm is 8x magnification, so they are have 8 mm size, wich is 1/3 of the 
picture
height of OM cameras. 

Frieder Faig

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