Leica APO-Macro-Summarit-S 120mm 2.5 ASPH CS User Manual

LEICA APO MACRO SUMMARIT-S 120 mm f/2.5

Technical Data.

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CS

Illustration 1:2

TECHNICAL DATA

Order no.

Image angle

(diagonal, horizontal, vertical)

Optical design

Number of lenses / groups 9 / 7

Entrance pupil infinity: 11.39 mm (in front of bayonet in incident light direction),

Focusing range 0,57 m to ∞

Distance setting

Scales Combined meter/feet graduation

Smallest object field 64 mm × 95 mm

Largest reproduction ratio 1 : 2,1

Aperture

Setting / Function Electronically controlled diaphragm, set using setting/

Lowest value 22

Bayonet

Filter mount / Lens hood

Dimensions and weight

Length to bayonet mount approx. 128 / 202 mm (without / with lens hood)

Largest diameter approx. 91 / 103 mm (without / with lens hood)

Weight approx. 1135 / 1205 g (without / with central shutter)

11070 (CS: 11052)

approx. 25° / 21° / 24°, corresponds to approx. 96 mm focal length in 35 mm format

close focus limit: 77.23 mm (in front of bayonet in incident light direction)

selection dial on camera, including half values

Leica S bayonet

External bayonet for lens hood (included), internal thread for
E72 filter, filter mount does not rotate

Leica Camera AG / Oskar-Barnack-Strasse 11 / 35606 SOL MS / GERMANY / Phone [phone] I Fax [phone] / www.leica- camera.com

Page 1 of 6 / As at September 2012 / Speci fications are subject to change without notice

LEICA APO MACRO SUMMARIT-S 120 mm f/2.5

ENGINEERING DRAWING LENS SHAPE

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CS

Illustration 1:2

The APO Macro-Summarit-S 120 mm f/2.5 plays a true dual role in the Leica S-System: On the one hand, it is a
macro lens with a maximum reproduction ratio of 1:2 that renders even the finest details with perfection. On the
other hand, its focal length, equivalent to 100 mm in 35 mm format, makes it an ideal moderate telephoto lens for
portrait photography, particularly as its unusually large initial aperture allows perfect isolation of portrait subjects
from their backgrounds.

Its design and construction is equally elaborate: of the nine lenses arranged in seven groups, three are made of
special glass with anomalous partial dispersion. The exceptionally low dispersion (colour scattering) of two of these
is instrumental in keeping chromatic aberrations to a minimum. Its front-group focusing design features a floating
element, i.e. an independently moving lens group that ensures spectacular imaging performance throughout the
entire focusing range, even at the closest of focusing distances. Although the lens does not feature a completely
sealed barrel due to the extreme extension of its close-up range, it is very effectively protected against the
influences of water droplets, dust and moisture.

The optical design of the lens ensures that aberrations such as vignetting or distortion remain imperceptible. The
contrast performance of the APO Macro-Summarit-S 120 mm f/2.5 is already so good at maximum aperture that
stopping down to smaller apertures brings only an insignificant increase in contrast rendition, and even then, only in
the extreme corners of the image. The combination of a moderate telephoto focal length, full macro-capability and
an unusually fast initial aperture of f/2.5, and an alternative version with a central shutter, make this a unique lens
in every respect.

Leica Camera AG / Oskar-Barnack-Strasse 11 / 35606 SOL MS / GERMANY / Phone [phone] I Fax [phone] / www.leica- camera.com

Page 2 of 6 / As at September 2012 / Speci fications are subject to change without notice