Compare Sigma 70-200 F2.8 DG OS HSM vs Sigma 17-70mm F2.8-4 DC Macro vs Pentax DA 16-85mm F3.5-5.6
Construction
Aperture Blades
11 blades
7 blades, rounded
7 blades, Rounded aperture
Colors
Black
Form Factor
Telephoto Zoom Lens
Standard Zoom Lens
Standard Zoom Lens
Image Size
Full-Frame
APS-C
APS-C
Lens Barrel
Focus limiter, Tripod collar, Distance scale
Distance scale
Lens Mount
Canon EF-mount, Nikon F-mount, Sigma SA-mount
Canon EF-mount, Nikon F-mount, Pentax K-mount, Sigma SA-mount, Sony A-mount
Pentax K-mount
Material
Plastic barrel, metal mount
Motor
Ring-type ultrasonic
Micro-type ultrasonic
Optical Formula | Elements
24 elements
16 elements
16 elements
Optical Formula | Groups
22 groups
14 groups
12 groups
Optical Formula | Special Glass
one SLD + nine FLD elements groups
2 FLD ("F" Low Dispersion) glass elements, 1 SLD (Special Low Dispersion) glass element, 3 aspherical glass lenses including double sided aspherical lens groups
HD, Super Protect coatings groups
Dimensions
Filter Diameter
82 mm / 3.23 in
72 mm / 2.83 in
72 mm / 2.83 in
Size | Diameter
94 mm / 3.70 in
79 mm / 3.11 in
78 mm / 3.07 in
Size | Length
203 mm / 7.99 in
82 mm / 3.23 in
94 mm / 3.70 in
Weight
1805 g / 63.78 oz
465 g / 16.43 oz
488 g / 17.24 oz
Function
Angle Of View
34.4° Diagonal | 28.8° Horizontal | 19.5° Vertical (wide) ~ 12.4° Diagonal | 10.3° Horizontal | 6.9° Vertical (tele)
80.7° Diagonal | 70.4° Horizontal | 50.4° Vertical (wide) ~ 23.3° Diagonal | 19.5° Horizontal | 13.0° Vertical (tele)
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 19.3° Diagonal | 16.1° Horizontal | 10.8° Vertical (tele)
Aperture
f/2.8 ~ f/22
f/2.8–4 ~ f/22
f/3.5–5.6 ~ f/22–38
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
70 mm ~ 200 mm
17 mm ~ 70 mm
16 mm ~ 85 mm
Focal Length (35mm Equivalent)
25.5 mm ~ 105.0 mm
24.0 mm ~ 127.5 mm
Focus Type
Internal
Internal
Extending front
Image Stabilization
Yes
Yes
No
Weather Resistance
Yes
Yes
Zoom Type
Internal zoom
External zoom
External zoom
Performance
Max Magnification
0.21x
0.36x
0.26x
Min Focus Distance
1200 mm / 47.24 in
220 mm / 8.66 in
350 mm / 13.78 in
Production
Accessory
Lens hood included
Lens Hood: LH780-03 (supplied)
Lens Hood: PR-RBA72 (supplied)
Debut
2018-09-25
2012-09-17
2014-10-29
Made In
Japan
Japan
Reviews
Neofiliac score
74%
65%
50%
Pros
- Superb autofocus speed
- Great sharpness
- Optically stabilized
- Internal zoom
- Weather-sealed
- Comes with a tripod collar
- Optically stabilized
- Rather good resolution
- Weather-sealed
Cons
- Released late in the DSLR game
- External zoom without zoom lock
- Merely 0.36x maximum magnification despite named "Macro"
- Not the best image quality
- Not the best build from Pentax
- External zoom without zoom lock
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