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Zeiss Biogon 25mm f/2.8 ZM Black for Leica M-Mount

Zeiss Biogon 25mm f/2.8 ZM Black for Leica M-Mount

Code: 1365653    Brand: Zeiss   

The ZEISS Biogon T 2,8/25 ZM delivers high contrast across the entire image field and is virtually free of distortion at full apertures. With the aperture stopped down, detail is finely rendered with a pleasing three-dimensional quality.

 IN STOCK
$1,845.25
APN: 4047865200066
Supplier Code: 1365-653

The ZEISS Biogon T 2,8/25 ZM delivers high contrast across the entire image field and is virtually free of distortion at full apertures. With the aperture stopped down, detail is finely rendered with a pleasing three-dimensional quality. The lens is rangefinder-coupled for easy focusing and the optional 25/28 mm viewfinder is available for accurate image composition. The Biogon T* 2,8/25 ZM is a creative tool for scenic portraits, inspiring landscapes and expansive architectural photography.

A lens with such a large field angle that it can capture as much of the photographer's surroundings as possible in a single shot – this is the origin of the name Biogon®. The largely symmetrical Biogon optical design enables the use of very compact, moderate to extremely wide-angle lenses, including with rangefinder and mirrorless system cameras. The lenses feature exceptionally good distortion correction, chromatic properties and image field flattening.

 

Virtually distortion-free optics

Dramatic perspectives and a view from extraordinary image angles – ZEISS lenses open up new composition possibilities. Distortion would disrupt the composition because straight lines, whose image does not go through the image center, would be reproduced with a curved shape.  This annoying effect is accordingly and largely compensated through elaborate optical designs at all focal lengths.

Minimized Focus Shift

ZEISS T® ZM-mount lenses are specifically designed to minimize focus shift with aperture changes – an important innovation with big benefits for rangefinder photography. As a result, you can expect improved accuracy of the rangefinder-defined focus. While the precise 10-blade aperture with 1/3 stop interval click stops ensures exact exposure.
 
 

Smooth, precise focusing

Manually focusing a lens means controlling the image result from your fingertips. A good ergonomic design makes all the difference. The user-friendly focusing ring on ZEISS lenses with an ergonomic finger rest is perfect for fast, precise focusing. Changes are immediately visible in the viewfinder. The high-quality focusing mechanism moves smoothly without play, thus also supporting the intuitive interaction with the focal plane.

ZEISS T anti-reflective coating

The optical elements of ZEISS lenses feature T ® anti-reflective coating on all surfaces and an optical design that guarantees images of superior brilliance at all times, even in unfavourable lighting conditions. We apply the anti-reflective coating to the lens surfaces by the vapour deposition of extremely thin, transparent layers on the glass. In this process, special substances are vaporized with extremely high energy in a high-vacuum environment and are subsequently deposited on the glass surfaces, one after another, as layers with precisely controlled thicknesses to achieve the desired reduction of reflective properties. The first coating techniques were employed by ZEISS as long ago as in the 1930s.

 
 

Robust design

The mount and control elements of all ZM lenses are made of metal and are designed for decades of intensive use. The high-quality craftsmanship of the all-metal mounts, the easy-to-grip metal focus and aperture ring and the robust front bayonet and filter threads ensure an amazing photographic experience.

 

Focal length

25 mm

Aperture range

f/2.8 – f/22

Camera mount

Leica M-Mount (ZM)

Format compatibility

Full Frame

Focusing range

0,50 m (19.69) – ∞

Angular field (diag. | horiz. | vert.)

82° / 72° / 52°

Coverage at close range (MOD)

470 x 710 mm (18.50 x 27.56)

Image ratio at minimum object distance

1 : 21

Lens elements | groups

9 / 7

Filter thread

M46 x 0.75

Length (without lens caps)

60 mm (2.36)

Weight

260 g (9.17 oz)

 

Zeiss Biogon T* 25mm f/2.8 ZM Lens (Black)
46mm Front Lens Cap for ZM Lenses
Rear Lens Cap for ZM-Mount Lenses

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OVERVIEW

The ZEISS Biogon T 2,8/25 ZM delivers high contrast across the entire image field and is virtually free of distortion at full apertures. With the aperture stopped down, detail is finely rendered with a pleasing three-dimensional quality. The lens is rangefinder-coupled for easy focusing and the optional 25/28 mm viewfinder is available for accurate image composition. The Biogon T* 2,8/25 ZM is a creative tool for scenic portraits, inspiring landscapes and expansive architectural photography.

A lens with such a large field angle that it can capture as much of the photographer's surroundings as possible in a single shot – this is the origin of the name Biogon®. The largely symmetrical Biogon optical design enables the use of very compact, moderate to extremely wide-angle lenses, including with rangefinder and mirrorless system cameras. The lenses feature exceptionally good distortion correction, chromatic properties and image field flattening.

 

Virtually distortion-free optics

Dramatic perspectives and a view from extraordinary image angles – ZEISS lenses open up new composition possibilities. Distortion would disrupt the composition because straight lines, whose image does not go through the image center, would be reproduced with a curved shape.  This annoying effect is accordingly and largely compensated through elaborate optical designs at all focal lengths.

Minimized Focus Shift

ZEISS T® ZM-mount lenses are specifically designed to minimize focus shift with aperture changes – an important innovation with big benefits for rangefinder photography. As a result, you can expect improved accuracy of the rangefinder-defined focus. While the precise 10-blade aperture with 1/3 stop interval click stops ensures exact exposure.
 
 

Smooth, precise focusing

Manually focusing a lens means controlling the image result from your fingertips. A good ergonomic design makes all the difference. The user-friendly focusing ring on ZEISS lenses with an ergonomic finger rest is perfect for fast, precise focusing. Changes are immediately visible in the viewfinder. The high-quality focusing mechanism moves smoothly without play, thus also supporting the intuitive interaction with the focal plane.

ZEISS T anti-reflective coating

The optical elements of ZEISS lenses feature T ® anti-reflective coating on all surfaces and an optical design that guarantees images of superior brilliance at all times, even in unfavourable lighting conditions. We apply the anti-reflective coating to the lens surfaces by the vapour deposition of extremely thin, transparent layers on the glass. In this process, special substances are vaporized with extremely high energy in a high-vacuum environment and are subsequently deposited on the glass surfaces, one after another, as layers with precisely controlled thicknesses to achieve the desired reduction of reflective properties. The first coating techniques were employed by ZEISS as long ago as in the 1930s.

 
 

Robust design

The mount and control elements of all ZM lenses are made of metal and are designed for decades of intensive use. The high-quality craftsmanship of the all-metal mounts, the easy-to-grip metal focus and aperture ring and the robust front bayonet and filter threads ensure an amazing photographic experience.

 

SPECIFICATIONS

Focal length

25 mm

Aperture range

f/2.8 – f/22

Camera mount

Leica M-Mount (ZM)

Format compatibility

Full Frame

Focusing range

0,50 m (19.69) – ∞

Angular field (diag. | horiz. | vert.)

82° / 72° / 52°

Coverage at close range (MOD)

470 x 710 mm (18.50 x 27.56)

Image ratio at minimum object distance

1 : 21

Lens elements | groups

9 / 7

Filter thread

M46 x 0.75

Length (without lens caps)

60 mm (2.36)

Weight

260 g (9.17 oz)

 

IN THE BOX

Zeiss Biogon T* 25mm f/2.8 ZM Lens (Black)
46mm Front Lens Cap for ZM Lenses
Rear Lens Cap for ZM-Mount Lenses