Leica 11088 Lense Specification Sheet
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LEICA ELMARIT-TL 18 mm f/2.8 ASPH.
Technical data.
Illustrations 1:1
Lens
Order no.
Compatible cameras
Angle of view
(diagonal, horizontal, vertical)
Optical design
Leica Elmarit-TL 18 mm f/2.8 ASPH.
Black anodized: 11 088
Silver anodized: 11 089
All Leica cameras with Leica L bayonet
Approx. 75°, 65°, 46°, corresponding to around 27 mm focal length in 27 mm format
Distance setting
Aperture
Bayonet fitting
Filter mount/
Lens hood
Finish
Dimensions and Weight
Number of lenses/groups: 8/6
Aspherical surfaces: 4
Position of entrance pupil (at infinity): -12.5 mm (in direction of light incidence in front of bayonet mount)
Setting/Function: Electronically controlled
Mode selectable using camera menu: Automatic (AF) or manual (M), in AF mode manual override possible at any times with setting dial
Focusing range: 0.3 m to
∞
Smallest object field/largest scale: approx. 343 x 228 mm/1:14
Setting/Function: Electronically controlled, adjustment using dial on camera, third values also available
Lowest value: 16
Leica L bayonet with contact strip
Internal thread for E39 filters, filter mount does not rotate
Black/silver anodized
Length to bayonet mount: approx. 21 mm
Largest diameter: approx. 62 mm
Weight: approx. 80 g
Page 1 of 3 I As at November 2017 I Specifications are subject to change without notice
Leica Camera AG I Am Leitz-Park 5 I 35578 WETZLAR I GERMANY I Telephone +49(0)6441-2080-0 I Fax +49(0)6441-2080-333 I www.leica-camera.com
LEICA ELMARIT-TL 18 mm f/2.8 ASPH.
ENGINEERING DRAWING
Illustration 1:1
ASPH.
LENS SHAPE
ASPH.
Page 2 of 3 I As at November 2017 I Specifications are subject to change without notice
Leica Camera AG I Am Leitz-Park 5 I 35578 WETZLAR I GERMANY I Telephone +49(0)6441-2080-0 I Fax +49(0)6441-2080-333 I www.leica-camera.com
LEICA ELMARIT-TL 18 mm f/2.8 ASPH.
MTF DIAGRAMS
60
40
20
0
0
Focal length 18 mm
Brennweite 18mm
Unendlich
100
[%]
80
60
40
20
0
0 0.2
0.4
0.6
0.8
1
Y'[mm]
100
[%]
80
60
100
[%]
80
0.2
0.4
0.6
0.8
1
Y' [mm]
Nahbereich
40
20
0
0 0.2
0.4
0.6
0.8
1
Y'[mm]
100
[%]
80
60
40
20
0
0 0.2
0.4
0.6
0.8
1
Y' [mm]
Sagittal structures
Tangential structures
MTF GRAPHS The MTF is indicated both at full aperture and at f/5.6 for long distances
(infinity) and close focussing distance. Shown is the contrast in percentage for 5, 10, 20 and 40 lp/mm across 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.
Page 3 of 3 I As at November 2017 I Specifications are subject to change without notice
Leica Camera AG I Am Leitz-Park 5 I 35578 WETZLAR I GERMANY I Telephone +49(0)6441-2080-0 I Fax +49(0)6441-2080-333 I www.leica-camera.com

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