Summarit-M 1:2.4/90, black anodised.

Leica (4022243116849 / 11684) - Leica - MILC - Leica M - 5/4 - Prime Lens - F2.4 - Closest focusing distance: 0.9 m - Diameter: 5.5 cm - Filter size: 46 mm - Fixed focal length: 9 cm - Length: 6

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Summarit-M 1:2.4/90 – A Masterpiece of Optical Engineering

The Summarit‑M 1:2.4/90, black anodised lens is a prime example of precision optics designed for the Leica M system. With its compact form factor and exceptional optical performance, this lens caters to photographers who demand both versatility and uncompromising image quality in a lightweight package.

Key Specifications

Focal Length: Fixed at 90 mm (9 cm), ideal for portrait, product, macro, food, and travel photography.
Aperture Range: Maximum aperture of f/2.4; minimum aperture value of 17 (f/17).
Diaphragm Blades: Eleven smooth‑bladed diaphragm for pleasing bokeh.
Minimum Focus Distance: Closest focusing distance of 0.9 m, enabling detailed macro shots without a dedicated macro attachment.
Filter Thread: Standard 46 mm filter size for easy access to polarizers, ND filters, and other accessories.
Mount: Leica M mount interface, ensuring seamless integration with Leica‑M compatible cameras.
Dimensions: Diameter of 5.5 cm; overall length of 6.7 cm.
Weight: Lightweight at only 0.346 kg, making it a comfortable companion for extended shooting sessions.
Construction: 5/4 lens structure, combining optical elements in an efficient arrangement that balances performance and size.
Color & Finish: Sleek black anodised finish provides durability while maintaining a classic aesthetic.

Optical Performance

The Summarit‑M 1:2.4/90 is engineered to deliver sharp, high‑contrast images across the frame. Its prime lens design eliminates many of the aberrations common in zoom lenses, ensuring crisp detail from edge to edge. The wide f/2.4 aperture allows for excellent low‑light performance and a shallow depth of field that isolates subjects beautifully.

With an eleven‑blade diaphragm, the lens produces smooth out‑of‑focus highlights (bokeh) that enhance portraiture and product shots. The 0.9 m minimum focus distance offers versatility for capturing close‑up details without the need for additional macro accessories.

Compatibility & Use Cases

This lens is specifically crafted for the Leica M mount, making it a perfect match for Leica‑M cameras and MILC (mirrorless) systems that support the Leica M interface. Its compact size and lightweight construction make it an excellent choice for:

Portrait Photography: The 90 mm focal length is flattering for facial features, while the wide aperture creates a dreamy background.
Product & Food Photography: Sharp detail combined with controlled depth of field highlights textures and colors.
Macro Work: Close focusing distance allows capturing intricate details of small subjects.
Travel & Street Photography: The lens’s portability and versatility enable spontaneous shooting in varied environments.

Build Quality & Design

The black anodised finish not only offers a stylish look but also provides resistance to scratches and corrosion. The robust construction ensures that the lens can withstand the rigors of everyday use, whether on a bustling street or in a controlled studio setting.

Conclusion

In summary, the Summarit‑M 1:2.4/90, black anodised lens combines compactness, lightweight design, and superior optical performance into a single package. Its compatibility with Leica M systems, coupled with its versatile focal length and wide aperture, makes it an indispensable tool for photographers seeking high quality images across a range of genres.

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Category This product is cataloged in our store in these categories	- Electronics - Camera Lenses
International Find this product in one of our international stores
Colors Predominant colors of the product
Identifiers
Brand	Leica is a brand of high-end cameras and optics. The company was founded in Germany in 1849, and has a long history of producing high-quality cameras and optics. Leica cameras are known for their precision engineering and high-quality optics, and are often used by professional photographers.
Model	Leica 0
MPN	Leica 11684
ID	8464683
Dimensions / Weight
Key Features
Camera brands compatibility A list of camera brand names that the product is compatible with, such as Canon, Nikon, Sony, Fujifilm, Panasonic, and others. Each entry should be a single brand name; multiple brands can be separated by commas or listed individually in a multi‑value field.	Leica
Closest focusing distance The minimum distance at which a camera lens can focus on an object while maintaining sharpness and clarity. It is expressed as a linear measurement (e.g., meters or centimeters) and indicates how close the subject can be to the sensor before the image becomes out of focus.	0.9 m
Colour The colour or combination of colours that a product is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the item for consumers.	Zwart
Component for Specifies the type of device or system that the product is intended to be used with, such as a PC, server, notebook, surveillance system, or other electronic equipment. The value represents a single category and can be used to filter or group products by their target platform.	MILC
Diameter The linear measurement across a circular or round object, taken through its center. It is expressed in units of length such as millimeters, centimeters, inches, or feet and represents the widest span of the item.	5.5 cm
Filter size	46 mm
Fixed focal length The distance from the optical center of a lens to its image plane when the lens is set at its working focus, expressed in a standard length unit such as millimetres or centimetres. It indicates the angle of view and zoom capability of an optical system and helps users compare lenses with different fixed focal lengths.	9 cm
Length The linear dimension of a product measured in a standard unit such as meters, centimeters or inches. It represents the overall size along one axis and is used to compare physical dimensions across similar items.	6.7 cm
Lens mount interface List of lens mount interfaces supported by a camera or lens, such as Canon EF, Nikon F, Sony E‑mount, Micro Four Thirds, etc. The value can be a single interface name or a comma‑separated list of multiple compatible mounts.	Leica M
Lens structure The aspect ratio describes the proportional relationship between the width and height of a lens’s image circle or sensor coverage, expressed as a simple fraction (e.g., 12/9). It indicates how wide or tall the captured image will be relative to its other dimension. This value helps users compare lenses for compatibility with camera sensors and desired framing.	5/4
Lens type The classification of a camera lens, indicating its optical design and intended use such as prime, zoom, wide‑angle, telephoto, macro or specialty types (e.g., fisheye, polarizing). It helps buyers understand the lens’s focal range, aperture characteristics, and typical shooting scenarios.	Prime Lens
Maximum aperture	F2.4
Minimum aperture number The total count of openings, such as holes or ports, present in a product. This value indicates how many separate apertures are available for access, ventilation, or connection purposes.	17
Number of diaphragm blades The total count of individual diaphragm blades included in the product. It indicates how many separate blades are present, which can affect performance characteristics such as airflow or pressure control.	11
Type of use	Food,Portrait,Product,Macro,Travel
Weight The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.	0.346 kg