Compare Pentax DA 55-300mm F4.0-5.8 vs Pentax-DA 20-40mm F2.8-4 vs Pentax-DA* 16-50mm F2.8
Construction
Aperture Blades
6 blades
9 blades, Rounded aperture
9 blades
Colors
Black
Black, silver
Black
Form Factor
Super Telephoto Zoom Lens
Standard Zoom Lens
Standard Zoom Lens
Image Size
APS-C
APS-C
APS-C
Lens Barrel
Distance scale
Distance scale, DoF scale
Lens Mount
Pentax K-mount
Pentax K-mount
Pentax K-mount
Material
Aluminium barrel
Magnesium alloy
Motor
Screw drive from camera
Micromotor
Stepper motor
Optical Formula | Elements
12 elements
9 elements
16 elements
Optical Formula | Groups
8 groups
8 groups
10 groups
Optical Formula | Special Glass
ED glass elements groups
1 ED glass element, 1 SLD glass element, HD coating groups
ED + anomalous glass + aspherical elements, HD coating groups
Dimensions
Filter Diameter
58 mm / 2.28 in
55 mm / 2.17 in
77 mm / 3.03 in
Size | Diameter
71 mm / 2.80 in
71 mm / 2.80 in
84 mm / 3.31 in
Size | Length
112 mm / 4.41 in
69 mm / 2.72 in
117 mm / 4.61 in
Weight
466 g / 16.47 oz
283 g / 10.00 oz
712 g / 25.16 oz
Function
Angle Of View
29.4° Diagonal | 24.6° Horizontal | 16.6° Vertical (wide) ~ 5.5° Diagonal | 4.6° Horizontal | 3.1° Vertical (tele)
71.6° Diagonal | 61.9° Horizontal | 43.6° Vertical (wide) ~ 39.7° Diagonal | 33.4° Horizontal | 22.6° Vertical (tele)
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 32.2° Diagonal | 27.0° Horizontal | 18.2° Vertical (tele)
Aperture
f/4–5.8 ~ f/22–32
f/2.8–4 ~ f/22–32
f/2.8 ~ f/22
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
1.5
Focal Length
55 mm ~ 300 mm
20 mm ~ 40 mm
16 mm ~ 50 mm
Focal Length (35mm Equivalent)
82.5 mm ~ 450.0 mm
30.0 mm ~ 60.0 mm
24.0 mm ~ 75.0 mm
Focus Type
Internal
Image Stabilization
No
No
No
Weather Resistance
Yes
Yes
Yes
Zoom Type
External zoom
External zoom
External zoom
Performance
Max Magnification
0.28x
0.2x
0.24x
Min Focus Distance
1400 mm / 55.12 in
280 mm / 11.02 in
300 mm / 11.81 in
Production
Accessory
Lens Hood: PH-RBI 58mm (supplied)
Lens Hood: MH-RA55 (supplied)
Lens Hood: PH-RBN77 (sold separately)
Debut
2013-10-07
2013-11-06
2021-07-14
Reviews
Neofiliac score
50%
50%
40%
Pros
- Weather-sealed
- Great price for the price
- Weather-sealed
- Beautiful construction for manual focusing
- Weather-sealed
- Solid build quality
Cons
- Dark and variable maximum aperture
- External zoom without zoom lock
- Not the best from Pentax
- External zoom without zoom lock
- Not the most interesting focal range
- Exterior designed like a 1990's lens
- External zoom without zoom lock
- Lens hood not included
- Expensive for APS-C
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