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Contax G mount Standard prime

Contax Zeiss 45mm f/2 Planar T*

Quick answer

The Contax Zeiss 45mm f/2 Planar T* is a standard prime lens covering 45mm at f/2.0 for the Contax G mount. Its fast maximum aperture helps in dim light and gives good subject separation.

  • Full frame
  • APS-C (68mm equiv.)
  • Micro Four Thirds (90mm equiv.)
  • Other systems via mount adapter
Focal
45mm
Aperture
f/2–16
Weight
190g
Filter
46mm
Min focus
0.5m

What 45mm sees

Full frame crop 1.0×
51.4° 43.6° horizontal
APS-C crop 1.5× → 68mm
35.5° 29.9° horizontal
Micro Four Thirds crop 2.0× → 90mm
27° 22.6° horizontal

Diagonal angle of view. Frames drawn to scale at 45mm. Calculated from the focal length and crop factor (adapted mount, so sensor size depends on your camera), not measured.

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Contax Zeiss 45mm f/2 Planar T* specifications

Optics

Focal length
45mm
Maximum aperture
f/2.0
Minimum aperture
f/16
Format coverage
Full frame
Optical construction
6 elements in 4 groups

Focus

Minimum focus distance
0.5 m

Physical

Filter thread
46 mm
Weight
190 g
Length
39 mm
Diameter
56 mm

General

Brand
Contax
Mount
Contax G
Lens type
Prime

Specification source: en.wikipedia.org

What can you shoot with the Contax Zeiss 45mm f/2 Planar T*?

At 45mm this is a standard prime, which typically suits:

  • Everyday and street photography
  • Natural-perspective portraits
  • Documentary and travel work

Its fast maximum aperture helps in dim light and gives good subject separation.

Frequently asked questions

What mount does the Contax Zeiss 45mm f/2 Planar T* use?

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

What is the focal length of the Contax Zeiss 45mm f/2 Planar T*?

It is a fixed 45mm lens with a maximum aperture of f/2.0. That makes it a standard lens.

Is the Contax Zeiss 45mm f/2 Planar T* a prime or a zoom lens?

It is a prime lens with a fixed 45mm focal length. Primes usually open wider than zooms; this one opens to f/2.0.

What is the Contax Zeiss 45mm f/2 Planar T* equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 68mm on full frame, with a 29.9° horizontal and 35.5° diagonal field of view. On Micro Four Thirds (2x crop) it frames like 90mm on full frame, with a 22.6° horizontal and 27° diagonal field of view. These figures are calculated from the focal length and crop factor.