Compare Pentax-DA 55-300mm F4.5-6.3 vs Pentax-D FA 70-210mm F4 vs Pentax-FA 77mm F1.8
Construction
Aperture Blades
9 blades, Rounded blades
9 blades
9 blades
Colors
Black
Black
Black, silver
Form Factor
Super Telephoto Zoom Lens
Super Telephoto Zoom Lens
Short Telephoto Prime Lens
Image Size
APS-C
APS-C
Full-Frame
Lens Barrel
Focus limiter, Distance scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Pentax K-mount
Pentax K-mount
Pentax K-mount
Material
Magnesium alloy
Aluminum
Motor
Stepper motor
Ring-type ultrasonic
Screw drive from camera
Optical Formula | Elements
14 elements
20 elements
7 elements
Optical Formula | Groups
11 groups
14 groups
6 groups
Optical Formula | Special Glass
ED elements + HD and SP coatings groups
2 anomalous dispersion and 3 ED elements + HD coating groups
HD + Super Protect coatings groups
Dimensions
Filter Diameter
58 mm / 2.28 in
67 mm / 2.64 in
49 mm / 1.93 in
Size | Diameter
77 mm / 3.03 in
79 mm / 3.11 in
64 mm / 2.52 in
Size | Length
89 mm / 3.50 in
175 mm / 6.89 in
48 mm / 1.89 in
Weight
471 g / 16.64 oz
819 g / 28.94 oz
270 g / 9.54 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)
23.3° Diagonal | 19.5° Horizontal | 13.0° Vertical (wide) ~ 7.9° Diagonal | 6.5° Horizontal | 4.4° Vertical (tele)
31.4° Diagonal | 26.3° Horizontal | 17.7° Vertical
Aperture
f/4.5–6.3 ~ f/22–32
f/4 ~ f/32
f/1.8 ~ f/22
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
55 mm ~ 300 mm
70 mm ~ 210 mm
77 mm
Focal Length (35mm Equivalent)
82.5 mm ~ 450.0 mm
105.0 mm ~ 315.0 mm
Focus Type
Extending front
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
Yes
Yes
No
Zoom Type
External zoom
Internal zoom
Performance
Max Magnification
0.3x
0.32x
0.14x
Min Focus Distance
950 mm / 37.40 in
950 mm / 37.40 in
700 mm / 27.56 in
Production
Accessory
Lens Hood: PH-RBK58 (supplied)
Lens hood included
Lens hood included
Debut
2016-06-08
2020-01-22
2021-02-24
Reviews
Neofiliac score
50%
31%
68%
Pros
- Weather-sealed
- Very affordable for the reach it provides
- Weather-sealed
- Beautifully built
- Very useful focal range
- Rather compact
- Beautifully crafted
- Comes with physical aperture ring
- Good image quality
- Smooth rendering
Cons
- Dark maximum aperture
- External zoom without zoom lock
- Dark maximum aperture
- Lacks weather sealing
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