Nocticron („Night-time“ from latin nox, noctis „night“ and ancient Greek kronos „time“[1]) is the brand name of Leica lenses with an extreme speed of f/1.2.

At photokina 2012 the model Lumix Leica DG Nocticron 1:1,2/42.5 mm ASPH[2] was announced, and it is available since 2014.

The anti-reflective coating of the telephoto lens with 1.7 times normal focal length has 14 lenses in 11 groups, two of them aspheric and another with extremely low dispersion.

[3] The Nocticron lenses allow a fast lens-body communication for autofocusing with its rather silent stepper motor, due to the large aperture size also at low light conditions.

With the parameters given in the table in all camera systems the photographer will get the same angle of view, depth of field, diffraction limitation and motion blur: