Archived posting to the Leica Users Group, 2001/01/18

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Subject: Re: [Leica] Re-computer 50mm Summilux-M
From: TTAbrahams@aol.com
Date: Thu, 18 Jan 2001 17:29:43 EST
 
 The really amazing thing is the glasspack in my Elcan 121 enlarger. Seven 
aspherically ground elements above the negative and one below! This was done 
in 1974 at extra ordinary cost to the US taxpayer. According to 
specification, the resolving power for that enlarger with its 75mm Elcan lens 
is in excess of 275 lines per millimetre! This is obviously a great idea, but 
considering that photographic paper resolves about 20 lpm, a serious case of 
"overkill"!
Tom A