Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Pentax K

Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Pentax K
120-400 mm
autofocus 3.3x zoom lens
f/4.5-5.6
variable aperture
  • Sigma OS Image stabilized
  • Sigma HSM Built-in focus motor

compatibilitywith digital cameras

APS-C (1.5x crop factor)

This lens is compatible with APS-C (1.5x crop factor) cameras such as the Pentax KP.

Pentax KP
11.2 - 3.4°
horizontal angle of view
184-613mm
35mm equivalent focal length

Pros

The Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Pentax K vs other Digital camera lenses

Auto focus Supports autofocus Help
Easier to use
Max focal length Excellent telephoto lens Help
400 mm
Image stabilization More advanced image stabilization Help
Sigma OS

Cons

The Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Pentax K vs other Digital camera lenses

Aperture Narrow aperture Help
f/4.5
Fixed aperture Variable aperture Help
Narrower aperture at longer focal lengths
Min focal length Poor wide angle lens Help
120 mm
Weight Quite heavy Help
1.8 kg
Diameter Quite large diameter Help
91 mm
Length Quite long Help
203 mm
Prime lens Zoom lens Help
Typically not as sharp as prime lenses
Wide minimum Poor narrowest aperture Help
f/5.6

The Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Pentax K vs other Digital camera lenses

Zoom range Below average zoom range Help
3.3x

Specifications

General

Min focal length
Help
120 mm
below average below average
Max focal length
Help
400 mm
unique unique
Zoom range
Help
3.3x
Magnification
Help
1:4.3 (0.2)

Aperture

Wide maximum
Help
f/4.5
below average below average
Wide minimum
Help
f/5.6
below average below average
Tele maximum
Help
f/5.6
below average below average
Tele minimum
Help
f/5.6
below average below average

Features

Auto focus
Help
Yes
above average above average
Focus motor
Help
Sigma HSM
Image stabilization
Help
Sigma OS
above average above average
Fisheye
Help
No
Tilt-shift
Help
No

Form factor

Lens mount
Help
Pentax K
Length
Help
203 mm
below average below average
Diameter
Help
91 mm
Filter size
Help
77 mm
Weight
Help
1.8 kg
below average below average

Angle of view

Wide horizontal
Help
11.2°
below average below average
Telephoto horizontal
Help
3.4°
above average above average
Wide vertical
Help
7.5°
below average below average
Telephoto vertical
Help
2.2°
above average above average
Wide diagonal
Help
13.5°
below average below average
Telephoto diagonal
Help
4.1°
above average above average

Competitors

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