Erwin Puts: "Leica M Lenses Their Soul and Secrets" 2002 You may download a free PDF version of the 2002-version of this from from It was originally written by Erwin Puts and made available by Leica Camera AGastigmatism): astigmatism a defect in the eye or in a lens caused by a deviation from spherical curvature, which results in distorted images, as light rays are prevented from meeting at a common focus.
Contact Leica Camera AG Customer Care for price and shipping. Walter Mandler] Version 4, also knowns as "King of Bokeh". Another 300 sets Leica M9-P Hermes Limited Edition with the Leica 50mm Summilux-M ASPH Hermes Limited Edition was released as well, price € 20,000 / 25,000$. From the introduction of the Leica M8 digital rangefinder all Leica M lenses were with a 6-BIT code so as to tell the camera which lens was mounted.
Noctilux-M ASPH silver Hermes Limited Edition set Lens design by Peter Karbe, lens and camera body re-design by Walter de'Silva.
Aperture The f/ stop on the camera that regulates how much light passes through the lens.
On a f/1.4 lens the lens is fully open" at f/1.4, at f/2.0 the aperture inside the lens make the hole through the lens smaller so only half the amount of light at f/1.4 passes through. The aperture is basically the focal length divided with the f/-stop = size of the hole (90mm divided with f/2.0 = the hole is 45 mm).
Approximately 10% of existing lenses was made in silver. Sold as set with either the Leica M9-P in silver or the Leica M3-P (another 20 screw-trad were made for this) film camera in silver.
Limited Edition celebrating Leica Shop Vienna 20 year anniversary on June 16, 2011.
Alternatively one can buy a lens coder kit from a third part and ink code the lens (the Leica Camera AG coding is engraved).
Since the introduction of the Leica M9 digital rangefinder another possibility also exist in that one can manually select which lens is on the camra and so get the adjustment and info the 6-BIT code else would give the camera.
Can be used on Leicaflex, SL and SL2 unless the lens has a ROM contact.
Most are compatible with Leica M Type 240 using a R-to-M adaptor and EVF digital viewfinder for focusing For Leica R lenses not already fitted with the digital ROM contacts, these can be added at Leica.
In this list the lenses that can be 6-bit coded is marked 6* "Visoflex" lenses were made for Leicaflex and Leicaflex SL and Leicaflex SL2 ("Visoflex" lenses with R bayonet; mainly known as Telyt-R lenses) and for Leica rangefinder cameras (Visoflex lenses with screw-threat and using a Visoflex device between the camera and the lens (see definitions in the bottom of this site)).