"Zeiss Ikon Biogon T* 4.0/18 Zm, Black Lens "

Technical Specifications

Focal length	18 mm
Aperture range	4 - 22
Focusing range	0.5 m - infinity
No. of elements/groups	10/8
Image ratio at close range	1 : 23
Coverage at close range	56 cm x 84 cm
Angular field, diag./horiz./vert.	98/87/65 ø
Filter	M 58 x 0.75
Dimensions (with caps)	o 65 mm, length 71 mm
Weight	350 g

Applications & Features

The Compact, Ultra Wide-angle Specialist
This ultra wide-angle lens allows for dynamic and unusual perspectives, making it well-suited for photographing confined interior spaces, as well as expansive landscapes. The Distagon T * 4/18 ZM is compact for its focal length, and offers very good distortion correction and outstanding performance across the image frame. The lens is coupled to the camera rangefinder and the optional 18 mm viewfinder is available for accurate image composition. Combined with a digital rangefinder camera with a 1.3 crop factor, the lens has an effective focal length of 23 mm.