Compare Sigma 18-35mm F1.8 DC HSM vs Pentax DA 16-85mm F3.5-5.6
Construction
Aperture Blades
9 blades, Rounded diaphragm
7 blades, Rounded aperture
Colors
Black
Form Factor
Zoom Lens
Standard Zoom Lens
Image Size
APS-C
APS-C
Lens Barrel
Distance scale
Lens Mount
Canon EF-mount, Nikon F-mount, Pentax K-mount, Sigma SA-mount, Sony A-mount
Pentax K-mount
Motor
Ring-type ultrasonic
Optical Formula | Elements
17 elements
16 elements
Optical Formula | Groups
12 groups
12 groups
Optical Formula | Special Glass
5 SLD glass elements, 4 glassmold aspherical elements groups
HD, Super Protect coatings groups
Dimensions
Filter Diameter
72 mm / 2.83 in
72 mm / 2.83 in
Size | Diameter
78 mm / 3.07 in
78 mm / 3.07 in
Size | Length
121 mm / 4.76 in
94 mm / 3.70 in
Weight
810 g / 28.62 oz
488 g / 17.24 oz
Function
Angle Of View
77.4° Diagonal | 67.4° Horizontal | 47.9° Vertical (wide) ~ 44.8° Diagonal | 37.8° Horizontal | 25.8° Vertical (tele)
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 19.3° Diagonal | 16.1° Horizontal | 10.8° Vertical (tele)
Aperture
f/1.8 ~ f/16
f/3.5–5.6 ~ f/22–38
Autofocus
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
18 mm ~ 35 mm
16 mm ~ 85 mm
Focal Length (35mm Equivalent)
27.0 mm ~ 52.5 mm
24.0 mm ~ 127.5 mm
Focus Type
Internal
Extending front
Image Stabilization
No
No
Weather Resistance
Yes
Zoom Type
Internal zoom
External zoom
Performance
Max Magnification
0.23x
0.26x
Min Focus Distance
280 mm / 11.02 in
350 mm / 13.78 in
Production
Accessory
Lens Hood: LH780-03 (supplied)
Lens Hood: PR-RBA72 (supplied)
Debut
2013-04-18
2014-10-29
Made In
Japan
Reviews
Neofiliac score
65%
50%
Pros
- Internal zoom
- High levels of resolution
- Weather-sealed
Cons
- Rather large and heavy for an APS-C lens
- Not the best image quality
- Not the best build from Pentax
- External zoom without zoom lock
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