Compare PENTAX-D FA 15-30mm F2.8 vs Pentax DA 21mm F3.2 vs Pentax DA 35mm F2.8 Macro
Construction
Aperture Blades
9 blades
7 blades, Rounded aperture diaphragm
9 blades, Rounded aperture diaphragm
Colors
Black
Black, Silver
Black, Silver
Form Factor
Ultra Wide-Angle Zoom Lens
Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
APS-C
APS-C
Lens Barrel
Distance scale
Distance scale, DoF scale
Distance scale, DoF scale
Lens Mount
Pentax K-mount
Pentax K-mount
Pentax K-mount
Motor
Ultrasonic
Screw drive from camera
Screw drive from camera
Optical Formula | Elements
18 elements
8 elements
9 elements
Optical Formula | Groups
13 groups
5 groups
8 groups
Optical Formula | Special Glass
Three ED and aspherical elements + HD and SP coatings groups
High-grade multi-layer HD (High Definition) Coating groups
High-grade multi-layer HD (High Definition) Coating groups
Dimensions
Filter Diameter
49 mm / 1.93 in
49 mm / 1.93 in
Size | Diameter
99 mm / 3.90 in
63 mm / 2.48 in
63 mm / 2.48 in
Size | Length
144 mm / 5.67 in
25 mm / 0.98 in
47 mm / 1.85 in
Weight
1040 g / 36.75 oz
134 g / 4.73 oz
214 g / 7.56 oz
Function
Angle Of View
110.6° Diagonal | 100.4° Horizontal | 77.3° Vertical (wide) ~ 71.6° Diagonal | 61.9° Horizontal | 43.6° Vertical (tele)
69.0° Diagonal | 59.5° Horizontal | 41.7° Vertical
44.8° Diagonal | 37.8° Horizontal | 25.8° Vertical
Aperture
f/2.8 ~ f/22
f/3.2 ~ f/22
f/2.8 ~ f/22
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
15 mm ~ 30 mm
21 mm
35 mm
Focal Length (35mm Equivalent)
31.5 mm
52.5 mm
Focus Type
Internal
Extending front
Image Stabilization
No
No
No
Weather Resistance
Yes
Performance
Max Magnification
0.2x
0.17x
1x
Min Focus Distance
280 mm / 11.02 in
200 mm / 7.87 in
140 mm / 5.51 in
Production
Accessory
Lens hood included
Lens Hood: MH-RBB43 (supplied)
Lens Hood: built-in hood (supplied)
Debut
2016-02-17
2013-08-27
2013-08-27
Reviews
Neofiliac score
31%
59%
68%
Pros
- Constant f/2.8 aperture
- Great optical performance
- Weather-sealed
- Beautifully constructed
- Very compact
- Very light
- Compact and lightweight
- 1:1 maximum magnification
- Beautiful construction
Cons
- Rather long
- On the heavy side
- Lacks front filter thread
- Dark aperture
- A bit expensive for an f/3.2 pancake
- A bit weak on IQ
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