Leica Tri-Elmar M 16-18-21/4 ASPH

LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
With its impressive angle of view of 107?, this new TRI-ELMAR conquers 16 mm super wide-angle photography in perfect Leica M style. Due to the minimal distortion and barely perceptible field curvature, it can be recommended for highly demanding architec- ture photography even at the 16 mm setting. Used on the digital M8, it produces the image effect of a 21 - 28 mm lens, still enab- ling extreme wide-angle views. The ultra compact shape is achieved by two aspherical elements. A new design of the interior focusing significantly enhances the quality in the close-focus range through an adaption of the floating element principle. Brilliant depth of field can therefore be used from a distance of 0.33 m for hyperfocal photography. Save money by buying the lens in a set together with the Universal Wide-angle Viewfinder M.
Lens shape 16 mm
Aspheres
Internal focussing
Vario group 1 Vario group 2
1
LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
Lens shape 18 mm
Lens shape 21 mm
2
LEICA TRI-ELMAR-M 1:4/16-18-21 mm ASPH.
3
 
Technical Data
Angle of view (diagonal, horizontal, vertical)
for 35 mm (24 x 36 mm):
at 16 mm: 107?, 97?, 74?
at 18 mm: 100?, 90?, 67?
at 21 mm: 92?, 81?, 60?
for digital (18 x 27 mm):
at 16 mm: 90?, 80?, 59?
at 18 mm: 84?, 74?, 53?
at 21 mm: 75?, 65?, 46?, corresponds approx. to a focal length of 21/24/28 mm with 35 mm-format
?Optical design Number of elements / groups: 10 / 7
?Distance setting
Focusing range: 0.5 m to Infinity, range from 0.5 to 0.7 m separated by index Scales: Combined meter/feet graduation with uniform grey figures below 0.7 m Smallest object field:
for 35 mm:
at 16 mm: 915 x 1373 mm, approx. 1:38 at 18 mm: 833 x 1250 mm, approx. 1:35 at 21 mm: 725 x 1087 mm, approx. 1:30 for digital:
at 16 mm: 688 x 1032 mm, approx. 1:38 at 18 mm: 626 x 939 mm, approx. 1:35 at 21 mm: 545 x 817 mm, approx. 1:30 Highest reproduction ratio: at 0,7 m at 16 mm: 1:38
at 18 mm: 1:35 at 21 mm: 1:30
?Aperture Setting / Function: Preset, with click-stops, half values available Lowest value: 22
?Bayonet Leica M quick-change bayonet with 6 bit lens identification bar code for digital M models
?Filter (type) Male thread, non-rotating and with stop for filter holder or lens hood
?Lens hood screw-on type lens hood (included in delivery), filter holder for E67 size filters optionally available
?Dimensions and weight Length: approx. 62/72 mm (with/without lens hood)
Largest diameter: approx. 54 mm (53 x 58 mm with lens hood)
Weight: approx. 335 g
?
20
Aperture Stop 5.6
100[%] 00
80
Y'[mm]
3 2
105[%]
-14 -23 -32 -41 -50
-1 0 -2 -3 -4
-5 Y'[mm]
Y'[mm]
0 5 10 15 20 40 5 10 15 20
100[%] 5[%] 4
80
60 40 20
0
??LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
MTF graphs 16 mm
0 -1 -2 -3 -4 -5
0 5 10 15 20 0 Y'[mm]
Y'[mm] 12
??%] 100[%] 80
60 Vignetting %]
Vignetting
Aperture Stop 8.0
???????8.0
5.6 4.0
8.0 5.6
4.0
??????0
40 20 0
50 105
1510 2015 20
Y'[mm]
Y'[mm]
?100[%] 80
60[ 100 40 80
20
60
Aperture Stop 4.0
???????%]
Apertu
re Stop 4
.0
?????0
400 5 10 15 20
Y'[mm]
??100[ 80
60[ 9 100
40 80 20 60
6
3
00 40
20 Relative Distortion 5[%]
0
?60 [%] 100
40 80 20 60 0
400
20 100[%
Aperture Stop 5.6
???5
1
01
52
0
Y'[m
]
]
Apertur
e Stop 8.
0
????????m
?0
0 5 10 15 20
??80
Y'[mm]
Relative Distortion
The MTF is indicated at full aperture and at
f/5.6 and f/8.0 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 205and 40 lp1/0mm reco1r5ds the re2s0olution of finer and finest object structures.Y'[mm]
Effective Disstaogrititoanl structures
_ _ _ _ _ _ _ _ tangential structures
?60 [%] 100
40 80 20 60
Aperture Stop 8.0
12
9
Y'[mm] 6
12 3
Effective Distortion
9 00
400 5 10 15 20 60 3 6 9 12 15 18
20
3
Y'[mm]
X'[mm]
0 5 10 15 20 Y'[mm]
32 4
1
VignettingAperture Stop 5.6 Relative Distortion
100[%]
100[%] 5[%] 4
80 8.0 3
5.6
??80
60
40
20
LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
Distortion 16 mm
0
0
2 60 1 0 -1 -2 -3 -4 -5
0 5 10 15 20
40
20
4.0
?20 Y'[mm]
0 5 10 15 20 Y'[mm]
Y'[mm]
0 5 10 15 20 Y'[mm]
?Y'[mm] 12
9 6 3 0
Effective Distortion
???????????????0 3 6 9 12 15 18 X'[mm]
?5[%]
4 3 2 1 0
-1 -2 -3 -4 -5
100[%]
Aperture Stop 8.0 Relative Distortion
????8
6
4
2
??????0
0
0
0
0 0 5
0 5 10 15 10 15 20
Y'[mm]
?????????????20 Y'[mm]
20 Y'[mm]
Y'[mm] 12
Vignetting 16 mm
Effective Distortion
?20 Y'[mm]
20 Y'[mm]
5[%]
4 3 2 1 0
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 loss of illumination over the image height. 100% means no vignetting.
9
?Vignetting
6 [%] 100
3 80
0 60 0
40 20 0
8.0 5.6 4.0
?????3
69
12
15 18
X'[m
]
????????????m
????0 5 10 15 20 Y'[mm]
-1
Relative Distortion
5
??LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
18 mm
??100 80 60 40 20
100
80
60
40
20
8.0 5.6 4.0
[%]
Aperture Stop 4.0
[%]
Vignetting
??????????????????????????????00 0 5 10 15 20
0 5 10 15 20 Y'[mm]
[%] Relative Distortion
????[%]
100
80
60
40
20
0
Aperture Stop 5.6
Y'[mm]
5 4 3 2 1 0
-1 -2 -3 -4 -5
????????????????????????????????100[%] 80
60 40 20
Aperture Stop 8.0
0 5 10 15 20 Y'[mm]
0 5 10 15 20 Y'[mm]
Effective Distortion
????????Y'[mm] 12
9 6 3
????????????00 0 5 10 15 20
Y'[mm]
0 3 6 9 12 15 18 X'[mm]
???????????6
??LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
21 mm
?7
?100 80 60 40 20
100
80
60
40
20
8.0 5.6 4.0
[%]
Aperture Stop 4.0
[%]
Vignetting
??????????????????????????????00 0 5 10 15 20
0 5 10 15 20 Y'[mm]
[%] Relative Distortion
????[%]
100
80
60
40
20
0
Aperture Stop 5.6
Y'[mm]
5 4 3 2 1 0
-1 -2 -3 -4 -5
?????????????????????????????????100[%] 80
60 40 20
Aperture Stop 8.0
0 5 10 15 20 Y'[mm]
0 5 10 15 20 Y'[mm]
Effective Distortion
?????????Y'[mm] 12
9 6 3
??????????00 0 5 10 15 20
Y'[mm]
0 3 6 9 12 15 18 X'[mm]
????????????
??LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
Depth of field table 16 mm
??????????Aperture Stop
4,0 5,6 8 11 16 22
0,426 - 0,614
0,491 - 0,786
0,552 - 0,982
0,608 - 1,209
0,709 - 1,789
0,910 - 4,969
1,060 - 45,22
1,269 -
1,507 -
2,093 -
0,403 - 0,679
0,460 - 0,904
0,511 - 1,183
0,557 - 1,542
0,638 - 2,682
0,792 - 214,2
0,899 -
1,041 -
1,190 -
1,517 -
0,374 - 0,813
0,420 - 1,178
0,461 - 1,737
0,497 - 2,698
0,558 - 12,08
0,666 -
0,737 -
0,826 -
0,913 -
1,085 -
0,344 - 1,098
0,381 - 1,963
0,413 - 4,516
0,440 - 210,2
0,484 -
0,560 -
0,607 -
0,663 -
0,715 -
0,810 -
0,306 - 2,956
0,333 -
0,355 -
0,373 -
0,402 -
0,449 -
0,476 -
0,507 -
0,534 -
0,582 -
0,272 -
0,292 -
0,307 -
0,319 -
0,339 -
0,368 -
0,385 -
0,403 -
0,418 -
0,444 -
Magnification
?0,5 0,6 0,7 0,8 1 1,5 2 3 5
1/25,9
1/32,
1/38,1
1/44,3
1/56,6
1/87,2
1/118
1/179
1/302
1/
?????????????Aperture Stop 4
??????????????????????0,5 0,6 0,7 0,8
1 1,5 2 3 5
????????????????????????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
??Aperture Stop 5,6
??????????????????????0,5 0,6 0,7 0,8
1 1,5 2 3 5
????????????????????????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
8
Distance Setting [m] Distance Setting [m]
Distance Setting [m]
??LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
??Aperture Stop 8
??????????????????????0,5 0,6 0,7 0,8
1 1,5 2 3 5
????????????????????????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
??Aperture Stop 11
??????????????????????0,5 0,6 0,7 0,8
1 1,5 2 3 5
????????????????????????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
?9
0,5 0,6 0,7 0,8
1 1,5 2 3 5
Aperture Stop 16
??????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
?????????????????????????????????????Distance Setting [m] Distance Setting [m] Distance Setting [m]
????
??LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
??Aperture Stop 22
??????????????????????0,5 0,6 0,7 0,8
1 1,5 2 3 5
????????????????????????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
10
Distance Setting [m]
??LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
Depth of field table 18 mm
??????????Aperture Stop
4,0 5,6 8 11 16 22
0,436 - 0,591
0,506 - 0,746
0,572 - 0,917
0,633 - 1,109
0,745 - 1,569
0,974 - 3,513
1,151 - 9,245
1,406 -
1,709 -
2,523 -
0,416 - 0,639
0,478 - 0,829
0,534 - 1,054
0,586 - 1,322
0,679 - 2,058
0,859 - 7,995
0,990 -
1,168 -
1,364 -
1,824 -
0,389 - 0,732
0,441 - 1,004
0,487 - 1,369
0,529 - 1,882
0,600 - 3,975
0,732 -
0,822 -
0,937 -
1,055 -
1,299 -
0,361 - 0,901
0,404 - 1,383
0,441 - 2,240
0,473 - 4,197
0,527 -
0,622 -
0,683 -
0,757 -
0,828 -
0,965 -
0,325 - 1,527
0,356 - 4,164
0,383 -
0,406 -
0,442 -
0,502 -
0,539 -
0,581 -
0,619 -
0,688 -
0,291 - 16,32
0,315 -
0,334 -
0,350 -
0,375 -
0,414 -
0,436 -
0,461 -
0,483 -
0,521 -
Magnification
?0,5 0,6 0,7 0,8 1 1,5 2 3 5
1/23,6
1/29,1
1/34,7
1/40,3
1/51,4
1/79,3
1/107
1/163
1/274
1/
?????????????Aperture Stop 4
??????????????????????0,5 0,6 0,7 0,8
1 1,5 2 3 5
????????????????????????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
?11
Aperture Stop 5,6
??????????????????????0,5 0,6 0,7 0,8
1 1,5 2 3 5
????????????????????????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
?Distance Setting [m] Distance Setting [m]
Distance Setting [m]
??LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
??Aperture Stop 8
??????????????????????0,5 0,6 0,7 0,8
1 1,5 2 3 5
????????????????????????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
??Aperture Stop 11
??????????????????????0,5 0,6 0,7 0,8
1 1,5 2 3 5
????????????????????????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
?12
0,5 0,6 0,7 0,8
1 1,5 2 3 5
Aperture Stop 16
??????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
?????????????????????????????????????Distance Setting [m] Distance Setting [m] Distance Setting [m]
????
??LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
??Aperture Stop 22
??????????????????????0,5 0,6 0,7 0,8
1 1,5 2 3 5
????????????????????????????????0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
?13
Distance Setting [m]
??LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
Depth of field table 21 mm
??????????Aperture Stop
4,0 5,6 8 11 16 22
0,448 - 0,568
0,524 - 0,707
0,595 - 0,858
0,663 - 1,020
0,788 - 1,390
1,054 - 2,690
1,268 - 5,055
1,590 - 42,08
1,996 -
3,232 -
0,433 - 0,598
0,502 - 0,758
0,566 - 0,936
0,626 - 1,137
0,734 - 1,625
0,955 - 3,813
1,125 - 11,69
1,367 -
1,650 -
2,397 -
0,410 - 0,656
0,470 - 0,859
0,524 - 1,102
0,574 - 1,401
0,662 - 2,259
0,831 - 12,41
0,953 -
1,117 -
1,294 -
1,699 -
0,385 - 0,749
0,436 - 1,036
0,481 - 1,430
0,522 - 2,000
0,591 - 4,542
0,718 -
0,804 -
0,914 -
1,026 -
1,256 -
0,352 - 0,993
0,391 - 1,622
0,426 - 2,968
0,455 - 7,894
0,505 -
0,590 -
0,644 -
0,709 -
0,771 -
0,887 -
0,320 - 1,704
0,350 - 5,827
0,376 -
0,398 -
0,433 -
0,490 -
0,525 -
0,565 -
0,601 -
0,666 -
Magnification
?0,5 0,6 0,7 0,8 1 1,5 2 3 5
1/20,5
1/25,3
1/30,2
1/35,0
1/44,7
1/68,8
1/93,0
1/141
1/238
1/
0,5 0,6 0,7 0,8
1 1,5 2 3 5
0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
?14
Aperture Stop 5,6
0,5 0,6 0,7 0,8
1 1,5 2 3 5
0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
Distance Setting [m] Distance Setting [m]
Distance Setting [m]
LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
Aperture Stop 8
0,5 0,6 0,7 0,8
1 1,5 2 3 5
0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
Aperture Stop 11
0,5 0,6 0,7 0,8
1 1,5 2 3 5
0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
15
0,5 0,6 0,7 0,8
1 1,5 2 3 5
Aperture Stop 16
0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
Distance Setting [m] Distance Setting [m] Distance Setting [m]
 
LEICA TRI-ELMAR-M 16-18-21 mm f/4 ASPH.
Aperture Stop 22
0,5 0,6 0,7 0,8
1 1,5 2 3 5
0 1 2 3 4 5 6 7 8 9 10 Depth of Field [m]
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