Leica SUMMILUX-M 35 mm f/1.4 ASPH. User manual

LEICA SUMMILUX-M 35 mm f/1.4 ASPH. 1
The outstanding imaging performance of this very compact lens is due to the application of aspherical technology. It delivers high
contrasts, excellent detail rendition over the entire image area, good field flatness, and it has extremely low coma. Because all
these qualities remain practically unchanged in the close-up range down to 0.7 m (28 in), this Summilux lens is the universal wide-
angle lens. Its applications range from portraits at medium distances all the way to landscape photographs. The 35 mm lenses are
already considered to be standard lenses in the Leica M system. With its large aperture, this lens masters all photographic situa-
tions superbly.
Lens shape
Asphere

LEICA SUMMILUX-M 35 mm f/1.4 ASPH. 2
Engineering drawing
Technical Data
Angle of view (diagonal, horizontal, vertical)
Optical design
Distance setting
Diaphragm
Bayonet
Filter (type)
Lens hood
Dimensions and weight
63°, 54°, 38°
Number of elements / groups: 9 / 5
Focal length: 35.6 mm
Entrance pupil: 16.8 mm (related to the first lens surface in light direction)
Focusing range: 0.7 m to Infinity
Scale: combined meter/feet-increments
Smallest object field: 420 mm x 630 mm
Highest reproduction ratio: 1:17.5
Setting / Type: with clickstops (including half values), manual diaphragm
Smallest aperture: f/16
Leica M quick-change bayonet
internal thread for screw-in type filters E 46
separate, clip-on type, lockable
Length: 46.2 mm
Largest diameter: 53 mm
Weight: approx. 250 g / 415 g (black anodized- / silver chrome finish )

LEICA SUMMILUX-M 35 mm f/1.4 ASPH. 3
0 5 10 15 20
Y’ [mm]
0
20
40
60
80
100
[%] Aperture Stop 1.4
0 5 10 15 20
Y’ [mm]
0
20
40
60
80
100
[%] Aperture Stop 5.6
0 5 10 15 20
Y’ [mm]
0
20
40
60
80
100
[%] Aperture Stop 2.8
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
_ _ _ _ _ _ _ _

LEICA SUMMILUX-M 35 mm f/1.4 ASPH. 4
Distortion
Vignetting
0 5 10 15 20
Y’ [mm]
-5
-4
-3
-2
-1
0
1
2
3
4
5
[%]
Relative Distortion
0 5 10 15 20
Y’ [mm]
0
20
40
60
80
100
[%] Vignetting
1.4
2.8
5.6
0 3 6 9 12 15 18
X’ [mm]
0
3
6
9
12
Y’ [mm]
Effective Distortion
Distortion is the deviation of the real image height
(in the picture) from the ideal image height. The
relative distortion is the percentage deviation.
The ideal image height results from the object
height and the magnification. The image height of
21.6mm is the radial distance between the edge and
the middle of the image field for the format 24mm x
36mm. The graph of the effective distortion illustra-
tes the appearance of straight horizontal and verti-
cal lines in the picture.
Vignetting is a continous decrease of the illumina-
tion to the edges of the image field. The graph
shows the percentage lost of illumination over the
image height. 100% means no vignetting.
tangential structures
sagittal structures
_ _ _ _ _ _ _ _

LEICA SUMMILUX-M 35 mm f/1.4 ASPH. 5
Depth of field table

                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
 

!"#"!
     
!"#"!
                    










 
!$%&'
!"#"!
                    










 
!$%&'

LEICA SUMMILUX-M 35 mm f/1.4 ASPH. 6
!"#"!
                    










 
!$%&'
!"#"!
                    










 
!$%&'
!"#"!
                    










 
!$%&'

LEICA SUMMILUX-M 35 mm f/1.4 ASPH. 7
Leica Camera AG / Oskar-Barnack-Straße 11 / D-35606 Solms / Telefon + 49 (0) 6442-208-0 / Telefax + 49 (0) 6442-208-333
www.leica-camera.com / [e-mail]
!"#"!
                    










 
!$%&'
!"#"!
                    










 
!$%&'
!"#"!
                    










 
!$%&'