Leica Summaron-M 28mm 5.6 User Manual

LEICA SUMMARON-M 28 mm f/5.6

Technical Data.

Illustration 1:1

Lens Leica Summaron-M 28 mm f/5.6

Order number 11 69 5

Angle of view
(diagonal, horizontal, vertical)

Optical design Number of elements/groups: 6/4

Distance setting Scala: combined meter-increments

Aperture Setting/type: prefix with click stops, full steps

Bayonet Leica M quick-change bayonet

Filter thread E34

Lens hood Clip-on (supplied)

Dimensions and weight Length: approx. 18/39 mm (without/with lens hood)

For 35 mm (24 x 36 mm): 75°/65°/46°

Position of entrance pupil in front of the bayonet: 2.4 mm
Focusing range: 1 m to infinity

Smallest object field: for 35 mm: 801 x 1201 mm
Largest reproduction ratio: 1:33.4

Smallest aperture: f/22
Number of aperture blades: 8

Largest diameter without lens hood: approx. 51 mm (without lens hood)
Weight: approx. 165 g (without lens hood)

Leica Camera AG

Am Leitz-Park 5 I 35578 WETZLAR I GERMANY I Telephone [phone] I Fax [phone] I www.leica-camera.com

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Page 1 of 6 I As at July 2016 I Specifications are subject to change without notice

LEICA SUMMARON-M 28 mm f/5.6

ENGINEERING DRAWING LENS SHAPE

Illustrations 1:1

This Leica Summaron 28 mm f/5.6 is a replica of the model originally introduced in 1955. With its 6 lens elements
arranged strictly symmetrically around the aperture in 4 groups, it has the same optical design. Its extremely com­pact mechanical construction also corresponds to the original. Unlike this, however, the current model is equipped
with the M bayonet including 6 bit code. Furthermore, various external details have been adapted to the appearance
of the current M lenses, for example the shape of the focus unlock button, the diameter of the aperture ring and
the knurling.
Even when fully open, the lens is characterized by high-contrast rendering in large areas of the field of view. Stopping
down to 11 greatly improves the imaging performance in the corners of the picture. Although stopping down further
enhances the picture corners even more, this is at the expense of the overall contrast, i.e. the imaging performance
is more even overall. When the aperture is open, vignetting is max., i.e. in the image corners, approx. 2.5 aperture
stages. By stopping down to 8 vignetting can be reduced to approx. 1.8 aperture stages. Distortion is negligible.
Summary: Due to its imaging properties and its focal length, the new edition of the Leica Summaron 28 mm f/5.6
is suitable for quick and discreet photography, in other words spontaneous snapshots. Its extremely small dimen­sions together with the camera make an extremely manageable unit that is easy to carry.

Leica Camera AG

Am Leitz-Park 5 I 35578 WETZLAR I GERMANY I Telephone [phone] I Fax [phone] I www.leica-camera.com

I

Page 2 of 6 I As at July 2016 I Specifications are subject to change without notice