Compare PENTAX-D FA 15-30mm 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
Ultra Wide-Angle Zoom Lens
Standard Zoom Lens
Ultra Wide-Angle Zoom Lens
Image Size
Full-Frame
APS-C
APS-C
Lens Barrel
Distance scale
Distance scale
Lens Mount
Pentax K-mount
Pentax K-mount
Pentax K-mount
Motor
Ultrasonic
Optical Formula | Elements
18 elements
16 elements
Optical Formula | Groups
13 groups
12 groups
Optical Formula | Special Glass
Three ED and aspherical elements + HD and SP coatings groups
HD, Super Protect coatings groups
Dimensions
Filter Diameter
72 mm / 2.83 in
Size | Diameter
99 mm / 3.90 in
78 mm / 3.07 in
Size | Length
144 mm / 5.67 in
94 mm / 3.70 in
Weight
1040 g / 36.75 oz
488 g / 17.24 oz
Function
Angle Of View
110.6° Diagonal | 100.4° Horizontal | 77.3° Vertical (wide) ~ 71.6° Diagonal | 61.9° Horizontal | 43.6° 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
Focal Length
15 mm ~ 30 mm
16 mm ~ 85 mm
11 mm ~ 18 mm
Focal Length (35mm Equivalent)
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
Performance
Max Magnification
0.2x
0.26x
Min Focus Distance
280 mm / 11.02 in
350 mm / 13.78 in
Production
Accessory
Lens hood included
Lens Hood: PR-RBA72 (supplied)
Lens hood included
Debut
2016-02-17
2014-10-29
2017-10-26
Reviews
Neofiliac score
31%
50%
40%
Pros
- Constant f/2.8 aperture
- Great optical performance
- Weather-sealed
- Beautifully constructed
- Weather-sealed
- Good build quality
- Good center resolution
Cons
- Rather long
- On the heavy side
- Lacks front filter thread
- 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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