Hasselblad HCD 4-28 - DATASHEET 2 User manual

LENSES
www.hasselblad.com
HASSELBLAD
HCD 4/28
GENERAL LENS DATA
Focal length 28.9 mm
Aperture range 4 - 32
Angle of view diag/hor/vert 95°/83°/66°
Length/diameter 102 mm/100 mm
Weight (incl. covers and lens shade) 850 g
Filter diameter 95 mm
CLOSE FOCUS RANGE DATA
Minimum distance object to lm 0.35 m
Maximum image scale 1:7.3
Corresponding area of coverage 36 x 27 cm
Corresponding exposure reduction 0 f-stop
LENS DESIGN
12 elements in 9 groups
FOCUS TYPE
Rear focusing
ENTRANCE PUPIL POSITION
134 mm in front of the sensor plane
(at innite focus setting)
The entrance pupil position is the correct
position of the axis of rotation when making
a panorama image by combining individual
images of a scene.
COMPATIBILITY
• TheHCD4/28mmisdesignedforuseontheHasselbladH3DandtheH2Fcamera.
• TheHCD4/28mmlensisdesignedsolelyfordigitaluse.Thismeansthatthelensisdesigned
for a format of 37x49 mm and does not cover the lm format (41.5x56mm).
The function is therefor disabled when using a lm magazine.
• TheHCD4/28mmlensisnotcompatiblewiththeconverter1.7x.
The HCD 28mm lens has been designed to be compact and
to deliver optimal performance when used with the 48x36mm
sensor of the Hasselblad H3D. Image quality from the
Hasselblad H3D is rened with integral use of Digital APO
Correction which perfects the raw image by digitally removing
any color aberration and distortion. The resulting raw images
have perfect pixel denition optimal for image rendering.

LENSES
www.hasselblad.com
HASSELBLAD
HCD 4/28
RELATIVE ILLUMINATION
Innity setting
DISTORTION
Innity setting
MTF
Modulation Transfer as a
function of image height at
innite focus setting.
Sagittal slit orientation drawn
with continuous line and
tangential with dashed. White
light. Spatial frequencies 10,
20 and 40 lp/mm
05/2008 - UK v2
f/4
100
80
60
40
20
00 10 20 30
MTF (%)
Image height (mm)
f/8
100
80
60
40
20
00 10 20 30
MTF (%)
Image height (mm)
Image height (mm)
Relative illumination
1.0
0.8
0.6
0.4
0.2
0
0 10 20 30
f/8
f/4
Distortion (%)
Image height (mm)
0 10 20 30
2
0
-2
-4