Summilux M 35 / 1 4 mm ASPH - Lens LEICA - Free user manual and instructions

USER MANUAL Summilux M 35 / 1 4 mm ASPH LEICA

1.4 2 2.8 4 5.1 35 4 5 6 8 12 30∞ feet 1 12 15 2 3 5 10∞ m 35 16 11 8 5.6 2.8 14 2.8 5.6 8 11 16

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 situations superbly.

Lens shape

Asphere

35 4 5 6 8 12 30 1 12 1.5 2 3 5 10 35 16 11 8 5.6 2.8 1

Engineering drawing

Technical Data
Angle of view (diagonal, horizontal, vertical)	63°, 54°, 38°
Optical design	Number of elements / groups: 9 / 5Focal length: 35.6 mmEntrance pupil: 16.8 mm (related to the first lens surface in light direction)Focusing range: 0.7 m to Infinity
Distance setting	Scale: combined meter/feet-incrementsSmallest object field: 420 mm x 630 mmHighest reproduction ratio: 1:17.5
Diaphragm	Setting / Type: with clickstops (including half values), manual diaphragmSmallest aperture: f/16
Bayonet	Leica M quick-change bayonet
Filter (type)	internal thread for screw-in type filters E 46
Lens hood	separate, clip-on type, lockable
Dimensions and weight	Length: 46.2 mmLargest diameter: 53 mmWeight: approx. 320 g

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 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.

Distortion

Vignetting

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 illustrates the appearance of straight horizontal and vertical lines in the picture.

Vignetting is a continuous decrease of the illumination to the edges of the image field. The graph shows the percentage lost of illumination over the image height. 100% means no vignetting.

sagittal structures tangential structures

Depth of field table

		Aperture Stop								Magnification
		1,4	2	2,8	4	5,6	8	11	16
Distance Setting [m]	0,7	0,684 - 0,716	0,679 - 0,723	0,671 - 0,732	0,659 - 0,747	0,644 - 0,768	0,623 - 0,801	0,598 - 0,848	0,562 - 0,940	1/17,3
	0,8	0,779 - 0,822	0,772 - 0,830	0,761 - 0,843	0,746 - 0,863	0,726 - 0,892	0,699 - 0,939	0,668 - 1,005	0,622 - 1,140	1/20,1
	1A0,967A-A1,035A0,9	55A-A1,049A0,939	A-A1,071A0,915A-A	1,104A0,885A-A1,	153A0,843A-A1,234	A0,797A-A1,355A0	731A-A1,622A1/	25,8
	1,2	1,152 - 1,252	1,135 - 1,273	1,111 - 1,305	1,077 - 1,357	1,035 - 1,432	0,978 - 1,562	0,915 - 1,765	0,828 - 2,259	1/31,4
	1,5	1,425 - 1,584	1,398 - 1,619	1,361 - 1,672	1,310 - 1,758	1,247 - 1,889	1,163 - 2,128	1,074 - 2,532	0,954 - 3,718	1/39,8
	2A1,867A-A2,154A1,8	20A-A2,221A1,757	A-A2,324A1,670A-A	2,498A1,568A-A2,	776A1,436A-A3,337	A1,301A-A4,475A1	125A-A10,51A1/	53,9
	3A2,705A-A3,368A2,6	07A-A3,537A2,477	A-A3,810A2,306A-A	4,311A2,112A-A5,	233A1,876A-A7,722	A1,648A-A19,24A1	372A-A∞A1/82,0
	5A4,224A-A6,131A3,9	84A-A6,724A3,686	A-A7,803A3,314A-A	10,29A2,923A-A17,	92A2,485A-A∞A2	095A-A∞A1,665A-A∞A1/138
	10A7,294A-A15,93A6,5	99A-A20,75A5,812	A-A36,47A4,932A-A	A4,106A-A∞A3,28	84A-A∞A2,631A-A∞	A1,981A-A∞A1/279
	∞	26,71 -∞	19,21 -∞	13,74 -∞	9,634 -∞	6,896 -∞	4,842 -∞	3,535 -∞	2,446 -∞	1/∞