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Leica NOCTILUX-M 50mm F/1.2 ASPH.

Standard prime lens • Digital era

Abbreviations

ASPH. The lens incorporates aspherical elements.

Model history (2)

■Leitz Wetzlar NOCTILUX 50mm F/1.2M6 - 41mS.VIII 1966 ●
■Leica NOCTILUX-M 50mm F/1.2 ASPH.M6 - 41mE49 2021 ●
Leitz Wetzlar NOCTILUX-M 50mm F/1.2 ASPH. Silver (100 units) 2021 ●

Features highlight

•
Ultra fast
•
2
ASPH
•
MF
•
Manual
•
16 blades
•
Compact
•
E49
filters

Specification

■ Production details
Announced:January 2021
Production status:● In production
Order No.:11686 - black anodized
Original name:LEICA NOCTILUX-M 1:1.2/50 ASPH.
System:Leica M (1954)
■ Optical design
Focal length:50mm
Speed:F/1.2
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
2 ASPH
■ 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/1.6 (in terms of depth of field)
Diagonal angle of view:36°
■ Focusing
Coupled to the rangefinder:Yes
Closest focusing distance:1m
Maximum magnification:1:17.7 at the closest focusing distance
Focusing modes:Manual focus only
Manual focus control:Focusing ring
■ Diaphragm mechanism
Diaphragm type:Manual
Aperture control:Aperture ring
Number of blades:16 (sixteen)
■ Physical characteristics
Weight:405g
Maximum diameter x Length:⌀61×52mm
■ Accessories
Filters:Screw-type 49mm
Lens hood:12475 - Snap-on round vented
Lens caps:14001 (front)
14269 (rear)
14379 (rear)
■ Source of data
Manufacturer's technical data.

Manufacturer description #1

Return of a landmark lens: the Noctilux-M 50 f/1.2 ASPH. becomes part of Leica’s Classics Range

With the Noctilux-M 50 f/1.2 ASPH. Leica is re-issuing a lens that occupies a very special place in the company’s history. Produced from 1966 to 1975, the Noctilux 50 f/1.2 was the world’s first lens to feature aspherical elements and, as such, represented something of a sensation. Its light sensitivity (which is enormous even by today’s standards) further contributed to the Noctilux’s legendary status – as did its unique aesthetic: images captured at open aperture are imbued with a soft, almost dreamlike quality – creating an unmistakable look with an exquisite bokeh.

These distinctive visual characteristics have been carefully retained in the new Noctilux-M 50 f/1.2, whose calculation and construction adheres so closely to the original that the imaging results are almost identical. Despite the fact that it was originally calculated more than fifty years ago, the purpose of this lens is by no means limited to nostalgic experiments: once it has been stopped down to f/2.8 (at the very latest), the Noctilux-M 50 f/1.2 delivers sharp images that live up to any quality expectations of modern-day digital photography. The lens also continues to be the most compact and light-weight Noctilux in Leica’s catalogue.

The Noctilux-M 50 f/1.2 ASPH. will be available in two variants. Before the introduction of the Noctilux in 1966, silver was the customary colour for M lenses – with the exception of a few special-edition models aimed at photojournalists, which were given a discreet black finish. The Noctilux marked the start of the company’s transition to black-anodised lenses. Prior to releasing the Noctilux on the market, Leica produced around five silver-finish prototypes. They now count among the most coveted and highly priced M lenses in existence. The serial, black-finish Noctilux 50 f/1.2 was produced in a total volume of just 1757 units. As a result, any well maintained model is also considered a highly sought-after collector’s item on today’s market.

The black anodised variant of the new Noctilux-M 50 f/1.2 ASPH. with aluminium lens barrel is available at specialist retailers as of now. The lens comes in packaging inspired by the original box, and is complemented by the same lens container that was provided with the original Noctilux 50 f/1.2 for safe keeping. The silver chrome variant, which is released in parallel, will be limited to a production run of 100 units. The special-edition model features a brass lens barrel, a front-ring engraving that reads LEITZ WETZLAR (instead of LEICA), and comes in packaging that bears an even closer resemblance to that of the original.

The Noctilux-M 50 f/1.2 ASPH. is the third lens to be added to the Leica Classics Range, following the previous re-issues of the Summaron-M 28 f/5.6 of 1955, and the Thambar-M 90 f/2.2 of 1935.

Manufacturer description #2

A Milestone in Photography History

Carefully adapted in line with modern lens design, the Leica Noctilux-M 50 f/1.2 ASPH. marks the return of one of the most famous lenses made for the Leica M-System. The reasons for the enduring appeal of this iconic lens have been its speed, elaborately constructed aspherical lens elements, and high rendition quality with a unique aesthetic at open aperture. The original Noctilux 50 f/1.2 was produced from 1966 to 1975 at a total quantity of 1,757 units.

A lens illuminates the Night

A street light in the dark, the rear lights of a car, a child’s face in candlelight, a performer in the spotlight – depicted with an authentic and natural clarity: images captured with a Noctilux are characterized by an unmistakable bokeh, and an almost impressionist aesthetic. Photographers the world over use this exceptional tool to master visual and creative challenges, and tell fascinating stories of darkness and light.

1966: the first Noctilux lens

In 1966, the Noctilux 50 f/1.2 astounded expo visitors and the trade press with its positively revolutionary optical attributes. The lens offered a maximum aperture that was enormous by the standards of the time, in conjunction with an exceptional optical performance. This was partly due to the fact that the Noctilux was the world’s first serially produced lens to feature two aspherical elements. Their purpose was to reduce spherical aberration at maximum aperture and improve rendition quality. To re-issue this iconic lens, the original calculation and construction were only minimally changed, and carefully adapted to the glass types and production methods available today.

Typical application

Class:

Ultra-fast full-frame standard prime lens

Genres or subjects of photography (7):

Landscapes • Cityscapes • Buildings • Interiors • Portraits • Street • Travel photography

Recommended slowest shutter speed when shooting static subjects handheld:

1/50th of a second

Alternatives in the Leica M system

Sorted by focal length and speed, in ascending order

Lenses with similar focal length and speed

Sorted by manufacturer name

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35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm
  • Area: 864mm2

MF

Sorry, no additional information is available.

14001

Replacement lens cap, black finish, for Leica E49 lenses.

14269

Replacement rear cover for Leica M-mount lenses.

14379

Replacement rear cover, plastic, black finish, for Leica M-mount lenses.

Aspherical elements

Aspherical elements (ASPH, XA, XGM) are used in wide-angle lenses for correction of distortion and in large-aperture lenses for correction of spherical aberration, astigmatism and coma, thus ensuring excellent sharpness and contrast even at fully open aperture. The effect of the aspherical element is determined by its position within the optical formula: the more the aspherical element moves away from the aperture stop, the more it influences distortion; close to the aperture stop it can be particularly used to correct spherical aberration. Aspherical element can substitute one or several regular spherical elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses.

Use of aspherical elements has its downsides: it leads to non-uniform rendering of out-of-focus highlights. This effect usually appears as "onion-like" texture of concentric rings or "wooly-like" texture and is caused by very slight defects in the surface of aspherical element. It is difficult to predict such effect, but usually it occurs when the highlights are small enough and far enough out of focus.

Low dispersion elements

Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens.

Low dispersion elements

Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens.

Canon's Super UD, Nikon's Super ED, Pentax' Super ED, Sigma's FLD ("F" Low Dispersion), Sony' Super ED and Tamron's XLD glasses are the highest level low dispersion glasses available with extremely high light transmission. These optical glasses have a performance equal to fluorite glass.

High-refraction low-dispersion elements

High-refraction low-dispersion elements (HLD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

High Index, High Dispersion elements

High Index, High Dispersion elements (HID) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

Anomalous partial dispersion elements

Anomalous partial dispersion elements (AD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

Fluorite elements

Synthetic fluorite elements (FL) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. Compared with optical glass, fluorite lenses have a considerably lower refraction index, low dispersion and extraordinary partial dispersion, and high transmission of infrared and ultraviolet light. They are also significantly lighter than optical glass.

According to Nikon, fluorite easily cracks and is sensitive to temperature changes that can adversely affect focusing by altering the lens' refractive index. To avoid this, Canon, as the manufacturer most widely using fluorite in its telephoto lenses, never uses fluorite in the front and rear lens elements, and the white coating is applied to the lens barrels to reflect light and prevent the lens from overheating.

Short-wavelength refractive elements

High and specialized-dispersion elements (SR) refract light with wavelengths shorter than that of blue to achieve highly precise chromatic aberration compensation. This technology also results in smaller and lighter lenses.

Blue Spectrum Refractive Optics

Organic Blue Spectrum Refractive Optics material (BR Optics) placed between convex and concave elements made from conventional optical glass provides more efficient correction of longitudinal chromatic aberrations in comparison with conventional technology.

Diffraction elements

Diffraction elements (DO, PF) cancel chromatic aberrations at various wavelengths. This technology results in smaller and lighter lenses in comparison with traditional designs with no compromise in image quality.

High refractive index elements

High refractive index elements (HR, HRI, XR etc) minimize field curvature and spherical aberration. High refractive index element can substitute one or several regular elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses.

Apodization element

Apodization element (APD) is in fact a radial gradient filter. It practically does not change the characteristics of light beam passing through its central part but absorbs the light at the periphery. It sort of softens the edges of the aperture making the transition from foreground to background zone very smooth and results in very attractive, natural looking and silky smooth bokeh.

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Image stabilizer

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.

Original name

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

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

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),

where:

CF – crop-factor of a sensor,
FL – focal length of a lens.

Mount

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

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.

Focal length

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.

Speed

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.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

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".

Manual diaphragm

The diaphragm must be stopped down manually by rotating the detent aperture ring.

Preset diaphragm

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.

Semi-automatic diaphragm

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.

Automatic diaphragm

The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Fixed diaphragm

The aperture setting is fixed at F/1.2 on this lens, and cannot be adjusted.

Number of blades

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.

Weight

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

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.

Weather sealing

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.

Fluorine coating

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.

Filters

Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

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

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.

Lens caps

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.