Data Sheet

Page 2 of 6
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As at July 2016
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Specifications are subject to change without notice
Leica Camera AG
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Am Leitz-Park 5
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35578 WETZLAR
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GERMANY
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Telephone [phone]
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Fax [phone]
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www.leica-camera.com
LEICA SUMMARON-M 28 mm f/5.6
ENGINEERING DRAWING LENS SHAPE
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 com-
pact 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 dimen-
sions together with the camera make an extremely manageable unit that is easy to carry.
Illustrations 1:1