Compare Pentax-D FA 21mm F2.4ED vs Pentax-FA 43mm F1.9
Construction
Aperture Blades
8 blades, Rounded diaphragm
8 blades
Colors
Black, Silver
Black, silver
Form Factor
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Pentax K-mount
Pentax K-mount
Material
Aluminum
Aluminum
Motor
Screw drive from camera
Optical Formula | Elements
11 elements
7 elements
Optical Formula | Groups
8 groups
6 groups
Optical Formula | Special Glass
4 ED elements, 1 Super ED element groups
HD + Super Protect coatings groups
Dimensions
Filter Diameter
67 mm / 2.64 in
49 mm / 1.93 in
Size | Diameter
74 mm / 2.91 in
64 mm / 2.52 in
Size | Length
89 mm / 3.50 in
27 mm / 1.06 in
Weight
416 g / 14.70 oz
155 g / 5.48 oz
Function
Angle Of View
91.7° Diagonal | 81.2° Horizontal | 59.5° Vertical
53.4° Diagonal | 45.4° Horizontal | 31.2° Vertical
Aperture
f/2.4–22 ~ f/2.4–22
f/1.9 ~ f/22
Autofocus
Yes
Yes
Focal Length
21 mm
43 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
Yes
No
Performance
Max Magnification
0.26x
0.12x
Min Focus Distance
180 mm / 7.09 in
450 mm / 17.72 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2021-10-21
2021-02-24
Reviews
Neofiliac score
76%
68%
Pros
- Weather-sealed
- Great image quality
- 8-bladed aperture for sunstars
- Compact and lightweight
- Comes with physical aperture ring
Cons
- Lacks weather sealing
- Expensive for a pancake lens
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