Compare Pentax-DA 11-18mm F2.8 vs Pentax-DA* 16-50mm F2.8 vs Pentax-D FA 24-70mm F2.8
Construction
Aperture Blades
9 blades
9 blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Zoom Lens
Standard Zoom Lens
Standard Zoom Lens
Image Size
APS-C
APS-C
Full-Frame
Lens Barrel
Distance scale
Distance scale
Lens Mount
Pentax K-mount
Pentax K-mount
Pentax K-mount
Material
Magnesium alloy
Motor
Stepper motor
Ultrasonic
Optical Formula | Elements
16 elements
17 elements
Optical Formula | Groups
10 groups
12 groups
Optical Formula | Special Glass
ED + anomalous glass + aspherical elements, HD coating groups
Three ED + four aspherical elements + HD Coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
82 mm / 3.23 in
Size | Diameter
84 mm / 3.31 in
89 mm / 3.50 in
Size | Length
117 mm / 4.61 in
110 mm / 4.33 in
Weight
712 g / 25.16 oz
787 g / 27.81 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) ~ 32.2° Diagonal | 27.0° Horizontal | 18.2° Vertical (tele)
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 34.4° Diagonal | 28.8° Horizontal | 19.5° Vertical (tele)
Aperture
f/2.8
f/2.8 ~ f/22
f/2.8 ~ f/22
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
11 mm ~ 18 mm
16 mm ~ 50 mm
24 mm ~ 70 mm
Focal Length (35mm Equivalent)
16.5 mm ~ 27.0 mm
24.0 mm ~ 75.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
Yes
Yes
Zoom Type
External zoom
External zoom
Performance
Max Magnification
0.24x
0.2x
Min Focus Distance
300 mm / 11.81 in
380 mm / 14.96 in
Production
Accessory
Lens hood included
Lens Hood: PH-RBN77 (sold separately)
Lens Hood: PH-RBD82 (supplied)
Debut
2017-10-26
2021-07-14
2015-09-24
Reviews
Neofiliac score
40%
40%
59%
Pros
- Good build quality
- Good center resolution
- Weather-sealed
- Solid build quality
- Weather-sealed
- Good autofocus performance
- Well priced for f/2.8 standard zoom
Cons
- Lacks front filter thread
- Expensive for an APS-C wide-angle zoom
- Exterior designed like a 1990's lens
- External zoom without zoom lock
- Lens hood not included
- Expensive for APS-C
- Not as well built as newer Pentax lenses
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