Archived posting to the Leica Users Group, 2005/07/01

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Subject: [Leica] 21.4 meters across and only f/8 !
From: sdp35 at cwazy.co.uk (Craig Zeni)
Date: Fri Jul 1 05:22:17 2005
References: <001c01c57dbf$b5bb1750$6452c33e@symke> <p06210200beea26445953@[10.4.1.193]>
 
On Jun 30, 2005, at 6:47 PM, Henning Wulff wrote:

>> http://www.gmto.org/tech_overview
>> best,simon jessurun
>
> Isn't that about 25m across (3 x 8.4m) and a focal length of 18m which 
> results in approx. f/0.7?
>
> f/1 and larger (smaller number) are usual apertures in large mirror 
> telescopes.

Fast lens.  Looks expensive.  Proves that the auto racing adage applies 
to lenses:  Speed costs money - how fast do you want to go?

CZ
NC
In reply to: Message from s.jessurun95 at chello.nl (animal) ([Leica] 21.4 meters across and only f/8 !)
Message from henningw at archiphoto.com (Henning Wulff) ([Leica] 21.4 meters across and only f/8 !)