Zeiss Biogon T* 2.8/21 M42-I

ZEISS Classic Lenses

Proven optical design in a sturdy metal barrel for large image circles of 43 mm.

The ZEISS Classis lens family offers extraordinary image quality with high contrast for technical and industrial applications in addition to a precise fixture for focus and aperture. The outer design is characterized by a full-metal housing as well as a focus ring, which allows precise manual focusing.

The lenses cover line scan sensors up to 41 mm (4k to 8k) or full frame area sensors with 24 x 36 mm (up to 42 Mpixel). They are available with standard F-Mount and standard M42x1 Mount (45,5 mm Flange Focal Distance) for even more stability. The lens family consists of seven lenses from 25 mm to 85 mm. This range is completed by the lenses of the ZEISS Interlock family.

ZEISS lenses for technical applications are key components in complex production processes (Machine Vision) as well as in optical metrology, medical applications, traffic enforcement, quality assurance, sports and many other applications. Here they prove their outstanding image performance and reliability. Due to the precise manual adjustment of the helical focusing mount, you will gain much better results than with comparable lenses.


  • f/2.8 aperture
  • Precise manual focusing
  • Robust full-metal construction
  • Fixation for focus and aperture
  • Outstanding image quality
  • Compact and lightweight
  • For industrial cameras up to sensor sizes of 24×36 mm or 43mm line sensors

Remarks: *Available with fixing screws for focus and aperture **Only available with fixing screws for focus and aperture ***Not available with fixing screws (no Interlock lens)

Product Specifications

Zeiss Biogon T* 2.8/21 M42-I

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