I'm new to the world of Leica M, but what I've read so far seems to indicate that the optical formula of the f/1 Noctilux hasn't changed since its introduction (only cosmetics, lens hoods, & such). Is this true or has the optical formula been tweaked over the years? Thanks in advance, Chris

-- Christopher Chen (furcafe@cris.com), May 30, 2001

Answers

Optical design is the same for all the f/1 versions.

-- Jay (infinitydt@aol.com), May 30, 2001.

The very earliest mount design takes a E58 filter and was soon changed to a take a E60 filter. The Noctilux has some designed in mechanical vignetting to control abberations wide open but perhaps they found the E58 was a bit too much (warning idle speculation alert). Anyway I would get an E60 version, which the vast majority of them are...

Cheers,

-- John Collier (jbcollier@powersurfr.com), May 31, 2001.

The Noctilux has only one formula, from Dr. Walter Mandler of Wild Leitz Canada in Midland Ontario, Canada (Elcan )

There are varios versions, some with build in hood, some with detachable hood.

Noctilux was made in Canada up to 1997. After General Motor/Hughes sold Elcan to Raytheon in 1998, production of Noctilux moved to Germany.

-- martin tai (martin.tai@capcanada.com), June 04, 2001.