Compare Pentax-DA* 16-50mm F2.8 vs Pentax DA 16-85mm F3.5-5.6 vs Pentax-DA 11-18mm F2.8
Construction
Aperture Blades
9 blades
7 blades, Rounded aperture
Colors
Black
Black
Form Factor
Standard Zoom Lens
Standard Zoom Lens
Ultra Wide-Angle 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
Material
Magnesium alloy
Motor
Stepper motor
Optical Formula | Elements
16 elements
16 elements
Optical Formula | Groups
10 groups
12 groups
Optical Formula | Special Glass
ED + anomalous glass + aspherical elements, HD coating groups
HD, Super Protect coatings groups
Dimensions
Filter Diameter
77 mm / 3.03 in
72 mm / 2.83 in
Size | Diameter
84 mm / 3.31 in
78 mm / 3.07 in
Size | Length
117 mm / 4.61 in
94 mm / 3.70 in
Weight
712 g / 25.16 oz
488 g / 17.24 oz
Function
Angle Of View
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 32.2° Diagonal | 27.0° Horizontal | 18.2° Vertical (tele)
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 19.3° Diagonal | 16.1° Horizontal | 10.8° Vertical (tele)
105.4° Diagonal | 95.0° Horizontal | 72.1° Vertical (wide) ~ 77.4° Diagonal | 67.4° Horizontal | 47.9° Vertical (tele)
Aperture
f/2.8 ~ f/22
f/3.5–5.6 ~ f/22–38
f/2.8
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
1.5
Focal Length
16 mm ~ 50 mm
16 mm ~ 85 mm
11 mm ~ 18 mm
Focal Length (35mm Equivalent)
24.0 mm ~ 75.0 mm
24.0 mm ~ 127.5 mm
16.5 mm ~ 27.0 mm
Focus Type
Internal
Extending front
Image Stabilization
No
No
No
Weather Resistance
Yes
Yes
Zoom Type
External zoom
External zoom
External zoom
Performance
Max Magnification
0.24x
0.26x
Min Focus Distance
300 mm / 11.81 in
350 mm / 13.78 in
Production
Accessory
Lens Hood: PH-RBN77 (sold separately)
Lens Hood: PR-RBA72 (supplied)
Lens hood included
Debut
2021-07-14
2014-10-29
2017-10-26
Reviews
Neofiliac score
40%
50%
40%
Pros
- Weather-sealed
- Solid build quality
- Weather-sealed
- Good build quality
- Good center resolution
Cons
- Exterior designed like a 1990's lens
- External zoom without zoom lock
- Lens hood not included
- Expensive for APS-C
- Not the best image quality
- Not the best build from Pentax
- External zoom without zoom lock
- Lacks front filter thread
- Expensive for an APS-C wide-angle zoom
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