Leica Summarit M 35 / 2,5 Bruksanvisning
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LEICA SUMMARIT-M 35 mm f/2.5
1
The LEICA SUMMARIT-M 35 mm f/2.5 gives all users of rangefinder cameras with a Leica M bayonet access to the smallest and
lightest 35 mm lens available, offering the outstanding image quality that is the hallmark of all Leica M lenses. In the Leica M
system the 35 mm lens is used by many as the standard focal length, while on the digital LEICA M8, the LEICA SUMMARIT-M 35
mm f/2.5 corresponds approximately to a 50 mm standard lens. As a genuine all-rounder, it is indispensable choice whenever you
are putting together a new equipment configuration since it can deal effectively with all photographic situations - from vivid shots
of people at medium range all the way to dramatic landscapes.
Lens shape
LEICA SUMMARIT-M 35 mm f/2.5
2
Engineering drawig
Technical Data
Angle of view (diagonal, horizontal, vertical)
Optical design
Distance setting
Aperture
Bayonet
Filter mount/Lens hood
Dimension and weight
For 35 mm (24 x 36 mm) : 63°, 54°, 38°, for LEICA M8 (18 x 27 mm) : 50°, 42°, 29°,
corresponds to a focal length of approx. 47 mm with 35 mm-format
Number of lenses/groups: 6 / 4
Focal length: 35.4 mm
Position of entrance pupil: 9.3 mm (related to the first lens surface in light direction)
Focusing range: 0.8 to endless
Scales: Combined meter/feet graduation
Smallest object field/Largest reproduction ratio:
For 35 mm, approx. 490 x 735 mm /1:20.4
for LEICA M8, approx. 367 x 551 mm /1:20.4
Setting/Function: Preset, with click-stops, half values available
Lowest value: 16
Leica M quick-change bayonet with 6 bit lens identification bar code for digital M models
Non-rotating, internal thread for screw-on filters size E39, external thread with stop for lens hood
protection ring for external thread included in delivery, lens hood available as accessory
Length: approx. 33.9 mm
Largest diameter: approx. 51.4 mm
Weight: approx. 220 g
LEICA SUMMARIT-M 35 mm f/2.5
3
0 5 10 15 20
Y' [mm] = 21.0000
0
20
40
60
80
100
[%]
Aperture Stop 2.5
0 5 10 15 20
Y' [mm] = 21.0000
0
20
40
60
80
100
Aperture Stop 5.6
[%]
0 5 10 15 20
Y' [mm] = 21.0000
0
20
40
60
80
100
[%]
Aperture Stop 4.0
MTF graphs
The MTF is indicated both at full aperture and at
f/5.6 at long taking distances (infinity). Shown
is the contrast in percentage for 5, 10, 20 and
40 lp/mm accross the height of the 35 mm film
format, for tangential (dotted line) and sagittal
(solid line) structures, in white light. The 5 and
10 lp/mm will give an indication regarding the
contrast ratio for large object structures.The
20 and 40 lp/mm records the resolution of finer
and finest object structures.
tangential structures
sagittal structures
_ _ _ _ _ _ _ _
Produktspecifikationer
| Varumärke: | Leica |
| Kategori: | Lins |
| Modell: | Summarit M 35 / 2,5 |
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