Hasselblad Biogon CFi 4.5/38 user manual

Summary of the content on the page No. 1

LENSES
BIOGON
CFi 4.5/38
CLOSE FOCUS RANGE DATA:
Minimum distance object to film 0.30 m
Corresponding distance object to front lens 0.21 m
Maximum image scale 1: 4.7
Corresponding area of coverage 26 x 26 cm
Corresponding exposure reduction 0.5 f-stop
ENTRANCE PUPIL POSITION
73 mm in front of the film plane.
(at infinite focus setting):
The entrance pupil position is the correct position of the
axis of rotation when making a panorama image by com-
bining individual images of a scene.
MTF
f/4,5

Summary of the content on the page No. 2

LENSES BIOGON CFi 4.5/38 DEPTH-OF-FIELD DATA Given distances are calculated for a blur circle diameter of 60 microns and do not include the effect of lens aberrations. For very critical photography and great enlargements this blur will be visible. For these situations we recommend a conservative use of the DOF data. In such situations the data given for an aper- ture two f-stops larger should be used (for example, if shooting at f/8, use DOF data for f/4). Depth-of-field in meters f