SummaronM 28mm f5.6 - Lens LEICA - Free user manual and instructions

Product type	Hypercompact wide-angle lens
Brand	Leica
Model	Summaron-M 28mm f/5.6
Focal length	28 mm
Maximum aperture	f/5.6
Minimum aperture	f/22
Field of view (diagonal/horizontal/vertical)	75° / 65° / 46°
Optical structure (lenses/groups)	6 / 4
Minimum focus	1 m
Mount	Leica M bayonet with 6-bit coding
Filter	E34 internal thread
Lens hood	Slip-on (supplied)
Dimensions (length × diameter)	approx. 18 mm × 51 mm
Weight	approx. 165 g
Finish	Silver chrome
Lens identification	6-bit identification code for digital Leica M
Care and cleaning	Use a fine brush or microfiber cloth for the lenses; do not use solvents on the bayonet; grease if necessary with petroleum jelly
Spare parts	Front cap (14 058), rear cap (14 269), lens hood (12 474)
Repairability	Leica Camera AG after-sales service or national representatives

Frequently Asked Questions - SummaronM 28mm f5.6 LEICA

What is the mechanical back focus of this lens?

The mechanical back focus is designed for the Leica M mount. Usable on all Leica M cameras, including digital with 6-bit recognition.

How to attach the lens hood?

Slip the lens hood onto the front mount, aligning a small screw with the aperture mark (2b). Tighten the locking screw (1a) clockwise. To remove, unscrew.

Which filters are compatible?

Screw-in filters with E34 diameter (34 mm). Example: UV or polarizing filter. Available at specialist stores.

How to clean the lenses?

Use a fine brush or a clean, dry microfiber cloth. For smudges, wipe in circular motions from center to edge. Avoid cloths for glasses impregnated with chemicals.

What accessories are supplied?

Rectangular lens hood, metal front cap, rear cap (probably).

Is this lens suitable for Leica M digital cameras?

Yes, thanks to the 6-bit identification code. Leica M digital models (M8, M9, M240, M10, etc.) identify it and optimize exposure and image data.

What are the optical performances at full aperture?

Good contrast rendition. Vignetting of about 2.5 stops at the corners. Stopping down to f/8 reduces vignetting to 1.8 stops. Distortion is negligible.

How to grease the bayonet?

Apply a very thin layer of petroleum jelly with your finger, then wipe off excess with a clean cloth. Do not grease the 6-bit code area.

Does the camera viewfinder display the 28mm frame?

Only some Leica M cameras have a 28mm bright-line frame. Models without can be retrofitted by Leica after-sales service.

Where to find replacement parts?

The references are: front cap (14 058), rear cap (14 269), lens hood (12 474). Available from Leica or authorized dealers.

USER MANUAL SummaronM 28mm f5.6 LEICA

Cross-sectional diagram of a mechanical gear assembly showing internal components and motion paths (no text or labels)

Pure technical line drawing of a mechanical component with no text, numbers, or symbols

Designation of Parts

1. Lens hood with a. Clamping screw

2. Front mount with a. Filter-internal thread b. Index for aperture setting

3. Aperture setting ring

4. Focusing ring with a. Adjustment lever b. Locking button

5. Depth of field scale with a. Index for distance setting b. Stop pin c. Locking bearing d. Red index for changing lenses

6. 6 bit lens identification

Product Support / Software Support

Am Leitz-Park 5

D-35578 Wetzlar

Tel.: [phone] /-108

Fax: [phone]

[e-mail] / [e-mail]

LEICA CUSTOMER CARE

Thank you for your show of confidence in purchasing this lens. To ensure your pleasure with this high-quality product for years to come, please read these instructions carefully.

TECHNICAL SPECIFICATIONS

Ultra-compact wide angle lens for Leica M cameras with historical optical design

Angles of view(diagonal, horizontal, vertical)	75°, 65°, 46°1
Optical designNumber of lenses / groupsPosition of entrance pupil(at infinity)	6 / 42,4 mm (in the direction of light incidencebehind the bayonet fitting contact area)
Distance settingFocusing rangeScalesSmallest object field /Largest scale	1 to∞Meter divisionsapprox.: 801x1201mm / 1:33,41
ApertureSetting / FunctionLowest value	Pre-selection with engaging22
Bayonet fitting	Leica M quick-change bayonet with 6 bit lens identification bar code for digital M models2
Filter mount	Internal thread for screw-on filter E34, with non-rotating focusing mount
Lens hood	Clip-on (in delivery scope)
Viewfinder	Camera viewfinder3
Finish	Silver chrome finish
Dimensions and weightLength of the bayonet fitting contact surfaceLargest diameterWeight	approx. 18mmapprox. 51mmapprox. 165g
Compatible cameras	All Leica M cameras4

^1 For 35mm (24 x 36mm):

^2 The 6 bit lens identification bar code (6) situated on the bayonet flange enables the digital Leica M models to identify the attached type of lens. This information is utilized by the cameras to optimize exposure and image data.

^3 All Leica M cameras without 28 mm frame lines, except for those with 0.85x viewfinder, the M3 and the previous MP (professional version of the M3), can be equipped with this by the Customer Care department of Leica Camera AG (Address, see p. 10, or warranty card) (then appears together with the 90 mm frame lines).

^4 Use on the Leica M8 is not recommended because the necessary UV/IR corrections filters are not available.

SPECIAL FEATURES

This Leica Summaron 1:5,6/28mm is a replica of the model originally introduced in 1955. With its 6 lens elements arranged strictly symmetrically around the aperture in 4 groups, it has the same optical design. Its extremely compact mechanical construction also corresponds to the original. Unlike this, however, the current model is equipped with the M bayonet including 6 bit code. Furthermore, various external details have been adapted to the appearance of the current M lenses, for example the shape of the focus unlock button, the diameter of the aperture ring and the knurling.

Even when fully open, the lens is characterized by high-contrast rendering in large areas of the field of view. Stopping down to 11 greatly improves the imaging performance in the corners of the picture. Although stopping down further enhances the picture corners even more, this is at the expense of the overall contrast, i.e. the imaging performance is more even overall. When the aperture is open, vignetting is max., i.e. in the image corners, appeox. 2.5 aperture stages. By stopping down to 8 vignetting can be reduced to approx. 1.8 aperture stages. Distortion is negligible.

Summary: Due to its imaging properties and its focal length, the new edition of the Leica Summaron 1:5,6/28mm is suitable for quick and discreet photography, in other words spontaneous snapshots. Its extremely small dimensions together with the camera make an extremely manageable unit that is easy to carry.

STRUCTURE OF THE LENS

The structure of the Leica Summaron-M 1:5,6/28mm is exactly the same as that of its role model, which was manufactured between 1955 and 1963. Its extremely compact structure means a slightly different arrangement for the operating elements compared to other M lenses: it has an aperture setting ring (3) and a setting ring for the distance (4) with adjustment lever (4a) and locking button (4b). A ring on the bayonet supports the index for the distance setting (5a) as well as a depth of field scale (5) and a red index for the lens change (5d). Furthermore, there are also the two stop pins for distance setting (5b) and the locking bearing (5c) for the associated button (4b).

A 6 bit lens identification bar code (7) is situated on the bayonet flange. It relays lens data to the camera body so the exposure metering system of digital Leica M models can be calibrated. The information is also used to custom-optimize image data according to the respective lens.

FOCUSING

The lens is focused by rotating the distance-setting ring. In the infinity and 1m settings, stop pins (5b) limit the adjustment track of this lever. The infinity setting is also a lockable resting position. The relevant button (4b) must be pressed, both for unlocking and locking and for leaving or adopting the resting position.

DEPTH OF FIELD SCALE

The scale (5) shows the range of the depth of field for the set distance. The ranges are indicated by the correspondingly marked sections of the lines.

LENS HOOD

A square lens hood (1) that can be clicked on and clamped on is part of the delivery scope.

When putting it on, arrange it so that one of its little screws aligns precisely with the index for the aperture setting (2b). Make sure that it is sitting straight on the lens front frame and tighten the clamping screw (1a) by turning it (clockwise). This ensures that the optical paths of the lens and the distance meter are not cut, i.e. vignetting is prevented in the imaging and shadows in the measuring field of the distance meter.

A matching metal slip cover is also supplied to protect the front lens. This cover can only be used when the lens hood is removed. For as long as the camera is being carried and used ready for photography, the lens hood should always remain fitted. It provides effective protection against contrast-reducing stray light and also against damage and soiling of the front lens, e.g. from accidental fingerprints.

FILTERS

E34 acrew-on filters can be used on the Leica Summaron-M 1:5,6/28mm. These are available from a well-stocked photographic and optical specialists.

SPARE PARTS Order No.

Lens front cover (Silver chrome finish) 14 058
Lens back cover 14 269
Lens hood....12 474

TIPS ON LENS CARE

Dust on the outside of the lens should be removed carefully with a soft-haired brush or a soft, clean, dry cloth. We recommend micro-fiber cloths (available from photographic and optical specialists) that are stored in a protective container and can be washed at temperatures of up to 40^ C (without fabric softener, never iron!). If stains and fingerprints have to be removed, use such a cloth and clean with a circular movement starting at the center of the lens. Do not use the type of cloths used especially for cleaning eyeglasses since these are impregnated with chemicals which can damage the glass used for high performance lenses.

In order to ensure fast and smooth lens changes, the bayonet has been coated with a thin layer of grease in the factory. Normally, this lubricating film will remain on the lens for years, even if the lens is wiped from time to time. In the event that a grease solvent is used when cleaning, a fresh layer of grease should be applied. To do this, apply a small amount of vaseline to the bayonet with your finger and spread it with a clean cloth.

Important: Make sure not to apply too much vaseline to the bayonet, especially to omit the lens identification bar code (6), because residual grease could otherwise remain in the recess and lead to further grime accumulating. This could even cause the code to become illegible and thus interfere with some camera functions in digital M-models. In addition to the designation by type, each lens has an individual serial number. Please note this number in your documents as a safety measure.

LEICA PRODUCT SUPPORT

The Leica Product Support department can provide you with an answer to any technical application questions relating to the Leica range either in writing, on the telephone or by e-mail.

Leica Camera AG

Product Support / Software Support

Am Leitz-Park 5

35578 Wetzlar

Germany

Tel.: [phone] /-108

Fax: [phone]

[e-mail] / [e-mail]

LEICA CUSTOMER SERVICE

For service of your Leica equipment and in case of necessary repairs please contact the Customer Care department of Leica Camera AG or of any national Leica agency (see Warranty Card for address list).

Leica Camera AG

Customer Care

Am Leitz-Park 5

35578 Wetzlar

Germany

Tel.: [phone]

Fax: [phone]

[e-mail]

Product Support / Software Support

Am Leitz-Park 5

35578 Wetzlar, Germany

Tél. : [phone] /-108

Fax: [phone]

[e-mail]/[e-mail]

SERVICE APRÈS-VENTE LEICA

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SCHERPTEDIEPTESCHAAL

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LEICA KLANTENSERVICE

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SERVIZIO ASSISTENZA CLIENTI LEICA

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