Pentax SMC DA 17-70mm f/4 AL SDM

Pentax SMC  DA 17-70mm f/4 AL SDM
$347
17-70 mm
autofocus 4.1x zoom lens
f/4
fixed aperture
  • Pentax SDM Built-in focus motor

reviewswhat are people saying

"The lens is well-made, the SDM focusing is fast and quiet (used on a Pentax K20D), images are sharp throughout the zoom range, the bokeh is pleasing, and the lens is weatherproof"

bhphotovideo.com

"Great lens. Renders sharp images with wonderful colors"

bhphotovideo.com

"Lens motor hunts around before settling on focus points so focus not always quick, more like in-camera motor speed."

bhphotovideo.com

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 K-70 and Pentax KP.

Pentax K-70
69.3 - 19.1°
horizontal angle of view
26-107mm
35mm equivalent focal length

Pros

The Pentax DA 17-70mm f/4 AL SDM vs other Digital camera lenses

Auto focus Supports autofocus Help
Easier to use
Zoom range Above average zoom range Help
4.1x
Fixed aperture Fixed aperture Help
The same maximum aperture at all focal lengths

The Pentax DA 17-70mm f/4 AL SDM vs other Digital camera lenses

Wide minimum Good narrowest aperture Help
f/22

Cons

The Pentax DA 17-70mm f/4 AL SDM vs other Digital camera lenses

Aperture Narrow aperture Help
f/4
Prime lens Zoom lens Help
Typically not as sharp as prime lenses

Specifications

General

Min focal length
Help
17 mm
Max focal length
Help
70 mm
Zoom range
Help
4.1x
above average above average
Magnification
Help
1:3.2 (0.3)

Aperture

Wide maximum
Help
f/4
below average below average
Wide minimum
Help
f/22
Tele maximum
Help
f/4
Tele minimum
Help
f/22

Features

Auto focus
Help
Yes
above average above average
Focus motor
Help
Pentax SDM
Image stabilization
Help
None
Fisheye
Help
No
Tilt-shift
Help
No

Form factor

Lens mount
Help
Pentax K
Length
Help
94 mm
Diameter
Help
76 mm
Filter size
Help
67 mm
Weight
Help
485 g

Angle of view

Wide horizontal
Help
69.5°
Telephoto horizontal
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19.1°
above average above average
Wide vertical
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49.6°
Telephoto vertical
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12.8°
above average above average
Wide diagonal
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79.6°
Telephoto diagonal
Help
22.9°
above average above average

Competitors

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