|■Leitz / Leitz Wetzlar SUMMAR 50mm F/2 [LSM]||M||6 - 4||1m||A36||1933 ●|
|■Leitz / Leitz Wetzlar SUMMAR 50mm F/2 [LSM] • Collapsible||M||6 - 4||1m||A36||1934 ●|
|■Leitz / Leitz Wetzlar SUMMITAR 50mm F/2 [LSM] • Collapsible||M||7 - 4||1m||E36.4||1939 ●|
|■Leitz Wetzlar SUMMICRON 50mm F/2 [I] [LSM] • Collapsible||M||7 - 6||1m||E39||1953 ●|
|■Leitz Wetzlar SUMMICRON 50mm F/2 [I] • Collapsible||M||7 - 6||1m||E39||1954 ●|
|Leitz Wetzlar SUMMICRON 50mm F/2 for M3 Gold (1 unit) • Collapsible||1956 ●|
|■Leitz Wetzlar SUMMICRON 50mm F/2 [II]||M||7 - 6||1m||E39||1956 ●|
|Leitz Wetzlar SUMMICRON 50mm F/2 for M3 Gold (sample) (1 unit)||1957 ●|
|Leitz Wetzlar SUMMICRON 50mm F/2 for M3 Gold (1 unit)||1957 ●|
|Leitz Wetzlar SUMMICRON 50mm F/2 Gold (1 unit)||1957 ●|
|Leitz Wetzlar SUMMICRON 50mm F/2 [II] [LSM]||1960 ●|
|■Leitz Wetzlar SUMMICRON 50mm F/2 [II] Dual Range||M||7 - 6||1m||E39||1956 ●|
|■Leitz Wetzlar SUMMICRON 50mm F/2 [III]||M||6 - 5||0.7m||E39||1969 ●|
|■Leitz / Leitz Canada SUMMICRON-M 50mm F/2 [IV]||M||6 - 4||0.7m||E39||1980 ●|
|Leitz / Leitz Canada SUMMICRON-M 50mm F/2 “Leica 1913-1983” (200 units)||1983 ●|
|Leica SUMMICRON-M 50mm F/2 “Year of the Rooster” (268 units)||1993 ●|
|Leica SUMMICRON-M 50mm F/2 “LHSA 25th Anniversary” (151 units)||1993 ●|
|Leica SUMMICRON-M 50mm F/2 “Colombo ’92” (201 units)||1993 ●|
|■Leica SUMMICRON-M 50mm F/2 [V]||M||6 - 4||0.7m||E39||1994 ●|
|Leica SUMMICRON-M 50mm F/2 “RPS Royal Centenary” (100 units)||1994 ●|
|Leica SUMMICRON-M 50mm F/2 “Leica HISTORICA 20th Anniversary” (150 units)||1995 ●|
|Leica SUMMICRON-M 50mm F/2 “Gold Dragon” (300 units)||1995 ●|
|Leica SUMMICRON-M 50mm F/2 Gold “King of Thailand” (700 units)||1996 ●|
|Leica SUMMICRON-M 50mm F/2 Gold “Sultan of Brunei” (125 units)||1996 ●|
|Leica SUMMICRON-M 50mm F/2 “150 Jahre Optik” (30 units)||1999 ●|
|Leica SUMMICRON 50mm F/2 [LSM]||1999 ●|
|Leica SUMMICRON-M 50mm F/2 “Kanto” (100 units)||2000 ●|
|Leica SUMMICRON-M 50mm F/2 Titanium (500 units)||2001 ●|
|Leica SUMMICRON-M 50mm F/2 “50 Jahre SUMMICRON” (1000 units)||2003 ●|
|Leica SUMMICRON-M 50mm F/2 “Classic” (500 units)||2004 ●|
|Leica SUMMICRON-M 50mm F/2 Safari (500 units)||2019 ●|
|■Leica APO-SUMMICRON-M 50mm F/2 ASPH.||M||8 - 5||0.7m||E39||2012 ●|
|Leica APO-SUMMICRON-M 50mm F/2 ASPHERICAL for RED (1 unit)||2013 ●|
|Leica APO-SUMMICRON-M 50mm F/2 ASPH. Titanium (333 units)||2016 ●|
|Leica APO-SUMMICRON-M 50mm F/2 ASPH. Red (100 units)||2016 ●|
|Leica APO-SUMMICRON-M 50mm F/2 ASPH. “LHSA 50th Anniversary” (500 units)||2017 ●|
|Leica APO-SUMMICRON-M 50mm F/2 ASPH. Black (700 units)||2019 ●|
|Leica APO-SUMMICRON-M 50mm F/2 ASPH. “Leica HISTORICA 45th Anniversary” (45 units)||2020 ●|
|Leica APO-SUMMICRON-M 50mm F/2 ASPH. Titanium (250 units)||2022 ●|
|Leica APO-SUMMICRON-M 50mm F/2 ASPH. Gold “King of Thailand” (30 units)||2022 ●|
■ Production details
|Production type:||Small-batch production: 1000 (one thousand) units|
|Availability:||● Sold out|
|Order No.:||11615 - silver chrome|
|Original name:||LEICA SUMMICRON-M 1:2/50|
|System:||Leica M (1954)|
■ Optical design
|Maximum format:||35mm full frame|
|Mount and Flange focal distance:||Leica M [27.8mm]|
|Diagonal angle of view:||46.8°|
|Lens construction:||6 elements in 4 groups|
■ On Leica M8/M8.2 APS-H [1.33x] cameras
|35mm equivalent focal length:||66.5mm (in terms of field of view)|
|35mm equivalent speed:||F/2.7 (in terms of depth of field)|
|Diagonal angle of view:||36°|
|Coupled to the rangefinder:||Yes|
|Closest focusing distance:||0.7m|
|Maximum magnification:||<No data>|
|Focusing modes:||Manual focus only|
|Manual focus control:||Focusing ring|
■ Diaphragm mechanism
|Aperture control:||Aperture ring|
|Number of blades:||8 (eight)|
■ Physical characteristics
|Maximum diameter x Length:||<No data>|
|Lens hood:||<No data>|
■ Source of data
|Scarce manufacturer's technical data + own research.|
01 - 03/2003 - Limited anniversary edition
Leica Camera AG, Solms has launched a special limited edition of the standard LEICA SUMMICRON-M f/2/50 mm lens called “50 years of Summicron“. The lenses of the anniversary edition are designed in a silver-chrome brass mount like the first retractable model of the Summicron series of 1953. The focusing and aperture rings are partly knurled as was customary at that time. The special edition “50 years of Summicron“ will be delivered in a luxury presentation case together with a certificate personally signed by Hanns-Peter Cohn, CEO of Leica Camera AG and Ralf Coenen, Vice President Technology of Leica Camera AG. The delivery also includes a matching metal cap with engraved classic Leica logo, an attachable metal lens hood with a cutout for an undisturbed view of the subject through the camera viewfinder and another cap for storing the lens with the lens hood mounted the other way round.
The LEICA SUMMICRON f/2/50 mm from the special edition “50 years of Summicron“ will be available in a limited quantity of 1000 lenses worldwide at Leica stockists' from March 2003.
Exactly 50 years ago – in 1953 – Ernst Leitz, Wetzlar launched the first LEICA SUMMICRON f/2/50 mm lens. Due to its imaging properties, its high speed combined with a “natural perspective“ and its compact size as a universal standard lens, it is an important milestone in the history of Leica lenses.
The LEICA SUMMICRON f/2/50 mm of 1953 marked the end of a development that had already begun shortly after the introduction of the first Leica camera. When designing the LEICA ELMAR for the first Leica, Max Berek had deliberately confined himself to a maximum aperture of 3.5 in view of the high expectations of imaging quality and the means at his disposal back in 1923. Only ten years later, Leica photographers were able to use a LEICA SUMMAR f/2/50 mm, a symmetrically constructed six-element Gauss lens that was a considerable achievement at that time. The development of other glass types with higher refractive power led to further improvements of this lens design. 1949 marked a partial success - it was possible to make three of the lens elements of new high-refraction crown glass. However, this glass contained slightly radioactive thorium, which meant that lead glass had to be used for the last lens element to protect the film from the effects of radiation. In 1952, scientists in the Leitz glass laboratory managed to make the decisive breakthrough - they succeeded in melting the meanwhile world-famous thorium-free lanthanum crown glass LaK9. This, plus the parallel improvements in optical design enabled the development of the LEICA SUMMICRON f/2/50 mm. Incidentally, the name Summicron is not only a reference to the lens speed, but at the same time to the significance of this type of glass for the design of the lens.
The first Summicron of 1953 offered superlative imaging performance which was far superior to that of most of the lenses of that time, particularly at full aperture. When, 4 years later, another new design with four elements of LaK9 was completed, it was possible to enhance the imaging quality in the close range as well. The third generation of the Summicron made its début in 1969, exhibiting a further improvement in overall performance, and, in particular, contrast rendering – just as new high-definition films were coming on the market. This lens therefore established Leica's philosophy of imaging properties that still applies today. The fourth Summicron generation appeared in 1979. Image aberrations such as coma and secondary reflection were consistently minimized, field flattening satisfied even the requirements of research scientists in the close range.
Today, the LEICA SUMMICRON-M f/2/50 mm is an integral part of Leica's range of standard lenses. The handy universal lens has versatile application potential and offers excellent imaging quality even at the shortest focusing range.
This special edition of the SUMMICRON-M 50mm f/2 "50 Jahre SUMMICRON" uses the present series proven optics. Its special silver chrome finished brass mount was designed to resemble the original version. Therefore, it does not have a built-in lens hood, and its distance and aperture setting rings are only knurled section-wise as was common at the time.
The lens comes with:
A matching metal lens cap with an embossed, classical Leica logo, a removeable metal lens hood in classical design with cut-outs for unobstructed viewing of the subject through the camera's viewfinder, and another cap for when the lens hood is mounted in reverse position on the lens for storage.
The "50 Jahre" Summicron 2/50 was introduced in March 2003 in 1000 units to commemorate the 50th Anniversary of the production of the very first Summicron 50mm F/2 lens in 1953. Optically the "50 Jahre" lens is identical to the version V. Cosmetically, it resembles the version II, a.k.a. Rigid.
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A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.
The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.
Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.
Format refers to the shape and size of film or image sensor.
35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.
APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.
Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).
Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.
As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.
A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).
This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),
CF – crop-factor of a sensor,
FL – focal length of a lens.
A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.
A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.
Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance can also be different.
The flange focal distance (FFD) is the distance from the mechanical rear end surface of the lens mount to the focal plane.
Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.
Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.
Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.
The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.
The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.
In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.
The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.
The distance from the front edge of the lens to the subject at the maximum magnification.
Determines how large the subject will appear in the final image. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".
The diaphragm must be stopped down manually by rotating the detent aperture ring.
The lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value.
The lens features spring mechanism in the diaphragm, triggered by the shutter release, which stops down the diaphragm to the pre-set value. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value.
The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.
The aperture setting is fixed at F/2 on this lens, and cannot be adjusted.
As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.
Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.
At maximum aperture, the opening will be circular regardless of the number of blades.
Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).
Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).
For lenses with collapsible design, the length is indicated for the working (retracted) state.
A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.
Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.
Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front and/or rear lens elements over multi-coatings.
Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.
A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.
The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.
Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.
Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.
Teleconverters increase the effective focal length of lenses. They also usually maintain the closest focusing distance of lenses, thus increasing the magnification significantly. A lens combined with a teleconverter is normally smaller, lighter and cheaper than a "direct" telephoto lens of the same focal length and speed.
Teleconverters are a convenient way of enhancing telephoto capability, but it comes at a cost − reduced maximum aperture. Also, since teleconverters magnify every detail in the image, they logically also magnify residual aberrations of the lens.
Scratched lens surfaces can spoil the definition and contrast of even the finest lenses. Lens covers are the best and most inexpensive protection available against dust, moisture and abrasion. Safeguard lens elements - both front and rear - whenever the lens is not in use.