Archived posting to the Leica Users Group, 1999/10/09

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Subject: Re: [Leica] noct performance
From: "Dr. Joseph Yao" <yaojkfdr@netvigator.com>
Date: Sat, 09 Oct 1999 21:55:08 +0800

Jonathan Borden wrote:
> 
> Actually the Canon 50 f0.95 was built for the Canon 7s rangefinder. Canon
> has produced a f1.0 in the FD mount and the EOS mount. So in fact this lens
> is not 'newer' than the Noctilux. It is nearly as expensive as the Noct
> however.

There was never a f/1.0 lens in the FD series.  The fastest 50mm lens in
the FD line up were: 55mm f/1.2, 55mm f/1.2 Aspherical, 50mm f/1.2, and
50mm f/1.2 'L'.  There was also a FD 85mm f/1.2 'L'.

Canon once made a f/0.95 lens for the Canon 7 which had a special
bayonet mount for this huge lens.  It was reported that the lens was
actually a f/0.99 design, but since JIS allowed a 5% margin, the
labelling of f/0.95 was permitted.

Joseph