Archived posting to the Leica Users Group, 1998/09/18

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Subject: Re: [Leica] Lens weight vs finish
From: Dan Cardish <dcardish@microtec.net>
Date: Fri, 18 Sep 1998 07:56:00 -0400
 
The black finish lenses are anodized aluminum, while the chrome an titanium
require brass for the finish to adhere properly.  Brass is much heavier
than aluminum.

Dan C.

At 07:47 PM 18-09-98 +1000, Rob Studdert wrote:
>Hi all,
>
>I have just been studying the Leica M6 System brochure and I must admit I 
>am somewhat perplexed as the large percentage differences in weight of 
>apparently similar lenses of different finishes. For example the brochure 
>suggests that the Summilux-M f1.4/50 in black weighs 105gm lighter than 
>the silver chrome or titanium finish versions at 380gm.
>
>Can somebody shed some light on why this is so?