Compare Sigma 18-300 F3.5-6.3 DC Macro vs 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
Black
Form Factor
All-in-One Zoom Lens
Zoom Lens
Standard Zoom Lens
Image Size
APS-C
APS-C
APS-C
Lens Barrel
Distance scale
Distance scale
Lens Mount
Canon EF-mount, Nikon F-mount, Pentax K-mount, Sigma SA-mount, Sony A-mount
Canon EF-mount, Nikon F-mount, Pentax K-mount, Sigma SA-mount, Sony A-mount
Pentax K-mount
Motor
Ultrasonic
Ring-type ultrasonic
Optical Formula | Elements
17 elements
16 elements
Optical Formula | Groups
12 groups
12 groups
Optical Formula | Special Glass
4 "F" low dispersion, 1 special low dispersion groups
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
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) ~ 5.5° Diagonal | 4.6° Horizontal | 3.1° Vertical (tele)
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/3.5–6.3 ~ f/22
f/1.8 ~ f/16
f/3.5–5.6 ~ f/22–38
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
1.5
Focal Length
18 mm ~ 300 mm
18 mm ~ 35 mm
16 mm ~ 85 mm
Focal Length (35mm Equivalent)
27.0 mm ~ 450.0 mm
27.0 mm ~ 52.5 mm
24.0 mm ~ 127.5 mm
Focus Type
Extending front
Internal
Extending front
Image Stabilization
Yes
No
No
Weather Resistance
No
Yes
Zoom Type
External zoom (zoom lock available)
Internal zoom
External zoom
Performance
Max Magnification
3x
0.23x
0.26x
Min Focus Distance
390 mm / 15.35 in
280 mm / 11.02 in
350 mm / 13.78 in
Production
Accessory
Lens hood included
Lens Hood: LH780-03 (supplied)
Lens Hood: PR-RBA72 (supplied)
Debut
2014-09-12
2013-04-18
2014-10-29
Made In
Japan
Japan
Reviews
Neofiliac score
55%
65%
50%
Pros
- Very versatile focal range
- Optically stabilized
- Zoom lock prevents zoom creep
- High maximum magnification
- Internal zoom
- High levels of resolution
- Weather-sealed
Cons
- All-in-one lenses tend to offer lower IQ
- Lacks weather sealing
- 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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