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Contax 645 mount Telephoto

Contax Zeiss 140mm f/2.8 Sonnar T*

Quick answer

The Contax Zeiss 140mm f/2.8 Sonnar T* is a telephoto telephoto lens covering 140mm at f/2.8 for the Contax 645 mount. Its bright maximum aperture handles indoor and evening light reasonably well.

  • Full frame
  • APS-C (210mm equiv.)
  • Micro Four Thirds (280mm equiv.)
  • Other systems via mount adapter
Focal
140mm
Aperture
f/2.8–32
Weight
688g
Filter
72mm
Min focus
1.3m

What 140mm sees

Full frame crop 1.0×
17.6° 14.7° horizontal
APS-C crop 1.5× → 210mm
11.8° 9.8° horizontal
Micro Four Thirds crop 2.0× → 280mm
8.8° 7.4° horizontal

Diagonal angle of view. Frames drawn to scale at 140mm. Calculated from the focal length and crop factor (adapted mount, so sensor size depends on your camera), not measured.

Open the field-of-view calculator

Contax Zeiss 140mm f/2.8 Sonnar T* specifications

Optics

Focal length
140mm
Maximum aperture
f/2.8
Minimum aperture
f/32
Format coverage
Medium format
Optical construction
7 elements in 5 groups

Focus

Minimum focus distance
1.3 m

Physical

Filter thread
72 mm
Weight
688 g
Length
98 mm
Diameter
81 mm

General

Brand
Contax
Mount
Contax 645
Lens type
Telephoto

Specification source: en.wikipedia.org

What can you shoot with the Contax Zeiss 140mm f/2.8 Sonnar T*?

At 140mm this is a telephoto telephoto, which typically suits:

  • Sports and action
  • Wildlife and birds at moderate distance
  • Compressing distant landscapes

Its bright maximum aperture handles indoor and evening light reasonably well.

Frequently asked questions

What mount does the Contax Zeiss 140mm f/2.8 Sonnar T* use?

It uses the Contax 645 mount, so it fits Contax 645 cameras directly and can be used on other systems through a mount adapter.

What is the focal length of the Contax Zeiss 140mm f/2.8 Sonnar T*?

It is a fixed 140mm lens with a maximum aperture of f/2.8. That makes it a telephoto lens.

Is the Contax Zeiss 140mm f/2.8 Sonnar T* a prime or a zoom lens?

It is a prime lens with a fixed 140mm focal length. Primes usually open wider than zooms; this one opens to f/2.8.

What is the Contax Zeiss 140mm f/2.8 Sonnar T* equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 210mm on full frame, with a 9.8° horizontal and 11.8° diagonal field of view. On Micro Four Thirds (2x crop) it frames like 280mm on full frame, with a 7.4° horizontal and 8.8° diagonal field of view. These figures are calculated from the focal length and crop factor.