Leica Summarit M 50 / 2,5 Bruksanvisning
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LEICA SUMMARIT-M 50 mm f/2.5
1
Powerful, lightweight and designed to be easy to operate, the LEICA SUMMARIT-M 50 mm f/2.5's applications are as varied as
life itself. It corresponds closely to the field of vision and viewing patterns of the human eye and offers an impressively neutral
and natural perspective. On analog cameras, it is a brilliant standard lens while on the digital LEICA M8, its 67 mm equivalent
focal length makes it ideal for portraits or picking out precise details.
The 50 mm Summarit-M is tailor-made for everyday photography. Its lens speed is perfectly adapted for all common applications.
It is an updated double-Gauss six-element construction based on our tried and tested design. All of this means that this particular
Summarit-M makes the Leica M easier to experi ence than ever before, without cutting any corners in terms of optical performan-
ce.
Lens shape
LEICA SUMMARIT-M 50 mm f/2.5
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For 35 mm (24 x 36 mm) : 47°, 40°, 27°, for LEICA M8 (18 x 27 mm) : 36°, 30°, 20°,
corresponds to a focal length of approx. 67 mm with 35 mm-format
Number of lenses/groups: 6/4
Focus length: 50.1 mm
Position of entrance pupil: 28.0 mm (related to the first lens surface in light direction)
Focusing range: 0.8 m to endless
Scales: Combined meter/feet graduation
Smallest object field / Largest reproduction ratio:
For 35 mm, approx. 338 x 508 mm/1:14.1
for LEICA M8, approx. 254 x 380 mm/1:14.1
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. 33.0 mm
Largest diameter: approx. 51.5 mm
Weight: approx. 230 g
Engineering drawing
Technical Data
Angle of view (diagonal, horizontal, vertical)
Optical design
Distance setting
Aperture
Bayonet
Filter mount/Lens hood
Dimensions and weight
LEICA SUMMARIT-M 50 mm f/2.5
3
0 5 2010 15
Y' [mm] = 21.0000
0
20
40
60
80
100
[%]
Aperture Stop 2.5
0 5 2010 15
Y' [mm] = 21.0000
0
20
40
60
80
100
Aperture Stop 5.6
[%]
0 5 2010 15
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 50 / 2,5 |
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