Compare Nikon 70-300mm F4.5-6.3G vs Pentax-DA 20-40mm F2.8-4 vs Pentax-DA 55-300mm F4.5-6.3
Construction
Aperture Blades
7 blades
9 blades, Rounded aperture
9 blades, Rounded blades
Colors
Black
Black, silver
Black
Form Factor
Super Telephoto Zoom Lens
Standard Zoom Lens
Super Telephoto Zoom Lens
Image Size
APS-C
APS-C
APS-C
Lens Barrel
Distance scale, DoF scale
Lens Mount
Nikon F-mount
Pentax K-mount
Pentax K-mount
Material
Aluminium barrel
Motor
Stepper motor
Micromotor
Stepper motor
Optical Formula | Elements
14 elements
9 elements
14 elements
Optical Formula | Groups
10 groups
8 groups
11 groups
Optical Formula | Special Glass
1 ED element + Super Integrated Coating groups
1 ED glass element, 1 SLD glass element, HD coating groups
ED elements + HD and SP coatings groups
Dimensions
Filter Diameter
58 mm / 2.28 in
55 mm / 2.17 in
58 mm / 2.28 in
Size | Diameter
72 mm / 2.83 in
71 mm / 2.80 in
77 mm / 3.03 in
Size | Length
125 mm / 4.92 in
69 mm / 2.72 in
89 mm / 3.50 in
Weight
400 g / 14.13 oz
283 g / 10.00 oz
471 g / 16.64 oz
Function
Angle Of View
23.3° Diagonal | 19.5° Horizontal | 13.0° 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)
29.4° Diagonal | 24.6° Horizontal | 16.6° Vertical (wide) ~ 5.5° Diagonal | 4.6° Horizontal | 3.1° Vertical (tele)
Aperture
f/4.5–6.3 ~ f/32
f/2.8–4 ~ f/22–32
f/4.5–6.3 ~ f/22–32
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
1.5
Focal Length
70 mm ~ 300 mm
20 mm ~ 40 mm
55 mm ~ 300 mm
Focal Length (35mm Equivalent)
105.0 mm ~ 450.0 mm
30.0 mm ~ 60.0 mm
82.5 mm ~ 450.0 mm
Focus Type
Internal
Extending front
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Yes
Zoom Type
External zoom
External zoom
External zoom
Performance
Max Magnification
0.22x
0.2x
0.3x
Min Focus Distance
1100 mm / 43.31 in
280 mm / 11.02 in
950 mm / 37.40 in
Production
Accessory
Lens hood included
Lens Hood: MH-RA55 (supplied)
Lens Hood: PH-RBK58 (supplied)
Debut
2016-08-17
2013-11-06
2016-06-08
Reviews
Neofiliac score
41%
50%
50%
Pros
- Wide telephoto focal range
- Very long reach for a low price
- Weather-sealed
- Beautiful construction for manual focusing
- Weather-sealed
- Very affordable for the reach it provides
Cons
- Dark maximum aperture
- External zoom without zoom lock
- Lacks weather sealing
- Not optically stabilized
- External zoom without zoom lock
- Not the most interesting focal range
- Dark maximum aperture
- External zoom without zoom lock
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