Compare Pentax-DA 11-18mm F2.8 vs Pentax DA 16-85mm F3.5-5.6 vs Pentax-DA 55-300mm F4.5-6.3
Construction
Aperture Blades
7 blades, Rounded aperture
9 blades, Rounded blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Zoom Lens
Standard Zoom Lens
Super Telephoto Zoom Lens
Image Size
APS-C
APS-C
APS-C
Lens Barrel
Distance scale
Lens Mount
Pentax K-mount
Pentax K-mount
Pentax K-mount
Motor
Stepper motor
Optical Formula | Elements
16 elements
14 elements
Optical Formula | Groups
12 groups
11 groups
Optical Formula | Special Glass
HD, Super Protect coatings groups
ED elements + HD and SP coatings groups
Dimensions
Filter Diameter
72 mm / 2.83 in
58 mm / 2.28 in
Size | Diameter
78 mm / 3.07 in
77 mm / 3.03 in
Size | Length
94 mm / 3.70 in
89 mm / 3.50 in
Weight
488 g / 17.24 oz
471 g / 16.64 oz
Function
Angle Of View
105.4° Diagonal | 95.0° Horizontal | 72.1° Vertical (wide) ~ 77.4° Diagonal | 67.4° Horizontal | 47.9° Vertical (tele)
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 19.3° Diagonal | 16.1° Horizontal | 10.8° Vertical (tele)
29.4° Diagonal | 24.6° Horizontal | 16.6° Vertical (wide) ~ 5.5° Diagonal | 4.6° Horizontal | 3.1° Vertical (tele)
Aperture
f/2.8
f/3.5–5.6 ~ f/22–38
f/4.5–6.3 ~ f/22–32
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
1.5
Focal Length
11 mm ~ 18 mm
16 mm ~ 85 mm
55 mm ~ 300 mm
Focal Length (35mm Equivalent)
16.5 mm ~ 27.0 mm
24.0 mm ~ 127.5 mm
82.5 mm ~ 450.0 mm
Focus Type
Extending front
Extending front
Image Stabilization
No
No
No
Weather Resistance
Yes
Yes
Zoom Type
External zoom
External zoom
External zoom
Performance
Max Magnification
0.26x
0.3x
Min Focus Distance
350 mm / 13.78 in
950 mm / 37.40 in
Production
Accessory
Lens hood included
Lens Hood: PR-RBA72 (supplied)
Lens Hood: PH-RBK58 (supplied)
Debut
2017-10-26
2014-10-29
2016-06-08
Reviews
Neofiliac score
40%
50%
50%
Pros
- Good build quality
- Good center resolution
- Weather-sealed
- Weather-sealed
- Very affordable for the reach it provides
Cons
- Lacks front filter thread
- Expensive for an APS-C wide-angle zoom
- Not the best image quality
- Not the best build from Pentax
- External zoom without zoom lock
- Dark maximum aperture
- External zoom without zoom lock
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