Compare Pentax-D FA 70-210mm F4 vs Pentax-FA 77mm F1.8
Construction
Aperture Blades
9 blades
9 blades
Colors
Black
Black, silver
Form Factor
Super Telephoto Zoom Lens
Short Telephoto Prime Lens
Image Size
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
Material
Magnesium alloy
Aluminum
Motor
Ring-type ultrasonic
Screw drive from camera
Optical Formula | Elements
20 elements
7 elements
Optical Formula | Groups
14 groups
6 groups
Optical Formula | Special Glass
2 anomalous dispersion and 3 ED elements + HD coating groups
HD + Super Protect coatings groups
Dimensions
Filter Diameter
67 mm / 2.64 in
49 mm / 1.93 in
Size | Diameter
79 mm / 3.11 in
64 mm / 2.52 in
Size | Length
175 mm / 6.89 in
48 mm / 1.89 in
Weight
819 g / 28.94 oz
270 g / 9.54 oz
Function
Angle Of View
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 ~ f/32
f/1.8 ~ f/22
Autofocus
Yes
Yes
Crop Factor
1.5
Focal Length
70 mm ~ 210 mm
77 mm
Focal Length (35mm Equivalent)
105.0 mm ~ 315.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
Yes
No
Zoom Type
Internal zoom
Performance
Max Magnification
0.32x
0.14x
Min Focus Distance
950 mm / 37.40 in
700 mm / 27.56 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2020-01-22
2021-02-24
Reviews
Neofiliac score
31%
68%
Pros
- 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
- Lacks weather sealing
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