Compare Pentax-DA 55-300mm F4.5-6.3 vs Pentax-D FA 70-210mm F4
Construction
Aperture Blades
9 blades, Rounded blades
9 blades
Colors
Black
Black
Form Factor
Super Telephoto Zoom Lens
Super Telephoto Zoom Lens
Image Size
APS-C
APS-C
Lens Barrel
Focus limiter, Distance scale
Lens Mount
Pentax K-mount
Pentax K-mount
Material
Magnesium alloy
Motor
Stepper motor
Ring-type ultrasonic
Optical Formula | Elements
14 elements
20 elements
Optical Formula | Groups
11 groups
14 groups
Optical Formula | Special Glass
ED elements + HD and SP coatings groups
2 anomalous dispersion and 3 ED elements + HD coating groups
Dimensions
Filter Diameter
58 mm / 2.28 in
67 mm / 2.64 in
Size | Diameter
77 mm / 3.03 in
79 mm / 3.11 in
Size | Length
89 mm / 3.50 in
175 mm / 6.89 in
Weight
471 g / 16.64 oz
819 g / 28.94 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)
Aperture
f/4.5–6.3 ~ f/22–32
f/4 ~ f/32
Autofocus
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
55 mm ~ 300 mm
70 mm ~ 210 mm
Focal Length (35mm Equivalent)
82.5 mm ~ 450.0 mm
105.0 mm ~ 315.0 mm
Focus Type
Extending front
Internal
Image Stabilization
No
No
Weather Resistance
Yes
Yes
Zoom Type
External zoom
Internal zoom
Performance
Max Magnification
0.3x
0.32x
Min Focus Distance
950 mm / 37.40 in
950 mm / 37.40 in
Production
Accessory
Lens Hood: PH-RBK58 (supplied)
Lens hood included
Debut
2016-06-08
2020-01-22
Reviews
Neofiliac score
50%
31%
Pros
- Weather-sealed
- Very affordable for the reach it provides
- Weather-sealed
- Beautifully built
- Very useful focal range
Cons
- Dark maximum aperture
- External zoom without zoom lock
- Dark maximum aperture
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