Compare Pentax-DA* 16-50mm F2.8 vs Pentax DA 40mm F2.8 vs Pentax-FA 77mm F1.8
Construction
Aperture Blades
9 blades
9 blades, Rounded aperture diaphragm
9 blades
Colors
Black
Black, Silver
Black, silver
Form Factor
Standard Zoom Lens
Short Telephoto Prime Lens
Short Telephoto Prime Lens
Image Size
APS-C
APS-C
Full-Frame
Lens Barrel
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
Screw drive from camera
Screw drive from camera
Optical Formula | Elements
16 elements
5 elements
7 elements
Optical Formula | Groups
10 groups
4 groups
6 groups
Optical Formula | Special Glass
ED + anomalous glass + aspherical elements, HD coating groups
High-grade multi-layer HD (High Definition) Coating groups
HD + Super Protect coatings groups
Dimensions
Filter Diameter
77 mm / 3.03 in
49 mm / 1.93 in
49 mm / 1.93 in
Size | Diameter
84 mm / 3.31 in
63 mm / 2.48 in
64 mm / 2.52 in
Size | Length
117 mm / 4.61 in
15 mm / 0.59 in
48 mm / 1.89 in
Weight
712 g / 25.16 oz
80 g / 2.83 oz
270 g / 9.54 oz
Function
Angle Of View
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 32.2° Diagonal | 27.0° Horizontal | 18.2° Vertical (tele)
39.7° Diagonal | 33.4° Horizontal | 22.6° Vertical
31.4° Diagonal | 26.3° Horizontal | 17.7° Vertical
Aperture
f/2.8 ~ f/22
f/2.8 ~ f/22
f/1.8 ~ f/22
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
16 mm ~ 50 mm
40 mm
77 mm
Focal Length (35mm Equivalent)
24.0 mm ~ 75.0 mm
60.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
Yes
No
Zoom Type
External zoom
Performance
Max Magnification
0.24x
0.13x
0.14x
Min Focus Distance
300 mm / 11.81 in
400 mm / 15.75 in
700 mm / 27.56 in
Production
Accessory
Lens Hood: PH-RBN77 (sold separately)
Lens Hood: MH-RE49 (supplied)
Lens hood included
Debut
2021-07-14
2013-08-27
2021-02-24
Reviews
Neofiliac score
40%
68%
68%
Pros
- Weather-sealed
- Solid build quality
- Exceptionally light and compact
- Great rendering
- Rather compact
- Beautifully crafted
- Comes with physical aperture ring
- Good image quality
- Smooth rendering
Cons
- Exterior designed like a 1990's lens
- External zoom without zoom lock
- Lens hood not included
- Expensive for APS-C
- A bit expensive for a pancake lens
- Lacks weather sealing
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