Hasselblad XCD 21- 4.0 User Manual

XCD 4/21mm

DATAS HEE T

The XCD 21mm is an ultra wide-angle lens for the X System. Its

extremely short focal length provides a 17mm full frame equivalent

lens, making it perfect for landscape and architecture photography.

The lens features a 32 cm close distance setting (1:10 image

scale) and an aperture range between 4 and 32. The XCD 21mm

features full automatic focusing as well as instant manual focus.

GENERAL LENS DATA

Focal length 21,8 mm

Equivalent Focal length (24x36) 17 mm

Aperture range 4 - 32

Angle of view diag/hor/vert 105°/92°/75°

Length/diameter 106 mm/83 mm

Weight (excl. covers and lens shade) 600 g

Filter diameter 77 mm

Product number CP .HB.0000232.01

CLOSE FOCUS RANGE DATA

Minimum distance object to image plane 0.32 m

Maximum image scale 1:10

Corresponding area of coverage 44 x 33 cm

Corresponding exposure reduction 0 f-stops

All XCD lenses contain a lens shutter delivering shutter speeds

from 60 minutes to 1/2000 second. Synchronizing with ash at

all speeds allows full creative freedom when mixing ash and

daylight. The lens shutter also generates very little vibration pro-

viding hand-held shots with perfect sharpness.

COMPATIBILITY

• Hasselblad X1D cameras

LENS DESIGN

13 elements in 9 groups
2 aspherical elements

FOCUS TYPE

Internal focusing

ENTRANCE PUPIL POSITION

99 mm in front of image plane

The entrance pupil position is the correct po-

sition of the axis of rotation when making a

panorama image by combining individual im-

ages of a scene.

Specication subject to change without notice.

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XCD 4/21mm

Image height (mm)

MTF (%)

f/4

Image height (mm)

f/8

Image height (mm)

MTF (%)

f/4

Image height (mm)

f/8

1.0

Image height (mm)

Relative illumination

1

Image height (mm)

Distortion (%)

DATAS HEE T

2

MTF

Modulation Transfer as a function of image

height at innity and close range settings.

Sagittal slit orientation drawn with continuous

line and tangential with dashed. White light.

Spatial frequencies 10, 20 and 40 lp/mm

Innity

0.32m

100

80

60

40

20

0

0 5 10 15 20 25

100

80

60

40

20

0

0 5 10 15 20 25

100

0

8

0

6

MTF (%)

0

4

0

2

0

0 5 10 15 20 25

100

80

60

MTF (%)

40

20

0

0 5 10 15 20 25

RELATIVE ILLUMINATION

Innity setting

0.8

0.6

0.4

0.2

0

f/8
f/4

0 10 20

DISTORTION

Innity setting

Specication subject to change without notice.

0

-1

-2

-3

-4
0 10 20

April 2018 - XCD 21mm - UK v1.

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