Leica has announced the first two optics in a new line of Summicron-SL lenses for its SL-System, introducing the APO-Summicron-SL 75 mm f/2 ASPH. and the APO-Summicron-SL 90 mm f/2 ASPH.

Both new Leica SL lenses will be available in February and are aimed at portrait photographers.

Leica says both its new Summicron-SL lenses offer fast and silent autofocusing, thanks to a newly developed AF system that also promises a shorter close focusing limit.

The autofocus drives of the new Summicron-SL 75mm and 90mm f/2 lenses boast a stepping motor with a Dual Syncro Drive, which Leica says enables the AF system to travel the entire focusing range in just 250 milliseconds.

Leica says the new Summicron-SL 75mm and 90mm f/2 lenses are also Apochromatic, or APO corrected, meaning that they are designed to capture images in high-contrast light and reduce the effects of chromatic aberrations and colour fringing.

The new Leica Summicron-SL lenses are comprised of 11 elements, one of which is aspherical, featuring anomalous partial dispersion and are manufactured from sensitive and specially formulated, high-quality glass, Leica says.

The APO-Summicron-SL 75 mm f/2 ASPH. will be available from 25 January 2018, and the APO-Summicron-SL 90 mm f/2 ASPH. from 8 February 2018, priced at £3,750 an £4,100 (including VAT) respectively.

LensAPO-Summicron-SL 75 mm f/2 ASPH.APO-Summicron-SL 90 mm f/2 ASPH.
Angle of view31.8°/26.7°/18.0°27.3 / 22.9 / 15.4 °
(diagonal, horizontal, vertical)
Optical design
Number of elements/groupsSeptember 11, 2018September 11, 2018
Number of asphericals11
Position of entrance pupil in front of the bayonet flange35.4 mm22.9 mm
Focusing
Working range0.5 m to infinity0.6 m to infinity
Smallest object field120 × 180 mm120 × 180 mm
Largest reproduction ratioJanuary 1, 1970January 1, 1970
Aperture
Settings/functionsElectronically controlled iris, setting with the camera clickwheel control, half-stop settings possibleElectronically controlled iris, setting with the camera clickwheel control, half-stop settings possible
Aperture setting rangeFebruary 1, 2022February 1, 2022
Smallest aperture2222
Bayonet/sensor formatLeica L-bayonet, full-frame 35 mm formatLeica L-bayonet, full-frame 35 mm format
Filter threadE67E67
Dimensions and weight
Length to bayonet flange102 mm102 mm
Largest diameter73 mm73 mm
Weight720 g700 g