Hasselblad HCD 4/28 User manual

Hasselblad
Brand
Hasselblad
Model
HCD 4/28
Category
Camera lenses
Type
User manual
Specication subject to change without notice. www.hasselblad.com
1
DATASHEET
HCD 4/28
GENERAL LENS DATA
Focal length 28,9mm
Equivalent 35mm focal length
1
19,5 mm
Aperture range 4 - 32
Angle of view diag/hor/vert 53,4 x 40 format 99°/86°/70°
Angle of view diag/hor/vert 44 x 33 format 87°/74°/59°
Length/diameter 102 mm/100 mm
Weight 850 g
Filter diameter 95 mm
1
Horizontal coverage between 53,4 x 40 and 36 x 24 compared
CLOSE FOCUS RANGE DATA
Minimum distance object to lm 0.35 m
Maximum image scale 1:7,3
Corresponding area of coverage 39 × 29 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 lm 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 4,8/24 lens is designed for digital use and does not fully cover
the lm format (41.5x56 mm).
• The HCD 4,8/24 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 48×36mm
sensor of the H system digital cameras. Image quality is rened
with integral use of Digital Lens Correction which perfects the
raw image by digitally removing any color aberration, vignetting
and distortion. The resulting raw images have perfect pixel
denition optimal for image rendering.
Specication subject to change without notice. www.hasselblad.com
2
DATASHEET
HCD 4/28
RELATIVE ILLUMINATION
Innity setting
When images are imported to Phocus, light
fall-off is automatically removed.
DISTORTION
Innity setting
When images are imported to Phocus, distortion is
automatically removed.
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
200903 - HCD 28 - V8 EN
1
0
-1
-2
Distortion [%]
0 10 20 30
Image height [mm]
1.0
0.2
f/8
f/4
0.4
0.6
0.8
0
0 10 20 30
Image height [mm]
Relative Illumination
100
80
60
40
20
0
0 10 20 30
f/4 f/8
Image height [mm]
MTF [%]
100
80
60
40
20
0
0 10 20 30
Image height [mm]
MTF [%]
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Hasselblad HCD 4/28 User manual

Hasselblad
Brand
Hasselblad
Model
HCD 4/28
Category
Camera lenses
Type
User manual
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