Hasselblad 50mm F4 Distagon Cfi lens with caps and shade. (2001)

Many photographers consider the  Distagon T˟ 4/50  CFi lens the ideal all-purpose wide angle lens in medium format. The modern optical design guarantees high performance , even close-up , thanks to “floating elements”. Corner to corner illumination is very even with all aperture settings common in advertising nature and landscape photography , and veiling glare is extremely well controlled. So the Distagon T˟4/50 CFi lens is well suited for landscape shots with large blue sky areas.  Distortion is kept remarkably low, qualifying the Distagon T˟ 4/50 CFi lens for both professional architecture and product photography a unique strength of retro focus wide angle lens from Carl Zeiss. On top of all these benefits the Distagon T˟ 4/50 CFi lens is remarkably compact. Preferred use :  All-purpose , landscapes , calendars and travel.

Number of elements 9 Working distance (between mechanical front end of

Number of groups 8 lens and subject) 0.3 m

Max. aperture f/4 Close limit field size 351 mm x 351 mm

Focal length 51.9 mm Max. scale 1 : 6.3

Negative size 55 x 55 mm Entrance pupil

Angular field width 57°, height 57°, Position 31.9 mm behind the first lens vertex

diagonal 74° Diameter 13.0 mm

Min. aperture 32 Exit pupil

Camera mount CFi Position 22.2 mm in front of the last lens vertex

Shutter Prontor CFi 1s-1/500s, b, f Diameter 22.6 mm

Filter connection bayonett series 70 Position of principal planes

Focusing range infinity to 0.5 m H 53.8 mm behind the first lens vertex

Near ranges, optimized infinity to 4.0 m H’ 22.2 mm behind the last lens vertex

4.0 m to 1.2 m Back focal distance 74.1 mm

1.2 m to 0.8 m Distance between first

0.8 m to 0.5 m and last lens vertex 87.1 mm

Weight 800 g