Compare Pentax-DA 20-40mm F2.8-4 vs Pentax-D FA 150-450mm F4.5-5.6 vs Pentax DA 560mm F5.6
Construction
Aperture Blades
9 blades, Rounded aperture
9 blades, Rounded (150mm: F4.5-8, 450mm: F5.6-8)
Colors
Black, silver
Black
Form Factor
Standard Zoom Lens
Super Telephoto Zoom Lens
Super Telephoto Prime Lens
Image Size
APS-C
Full-Frame
APS-C
Lens Barrel
Distance scale, DoF scale
Focus limiter, Tripod collar, Distance scale
Lens Mount
Pentax K-mount
Pentax K-mount
Pentax K-mount
Material
Aluminium barrel
Motor
Micromotor
Micromotor
Optical Formula | Elements
9 elements
18 elements
6 elements
Optical Formula | Groups
8 groups
14 groups
5 groups
Optical Formula | Special Glass
1 ED glass element, 1 SLD glass element, HD coating groups
HD, Super protect coatings, ED elements groups
Dimensions
Filter Diameter
55 mm / 2.17 in
86 mm / 3.39 in
112 mm / 4.41 in
Size | Diameter
71 mm / 2.80 in
95 mm / 3.74 in
130 mm / 5.12 in
Size | Length
69 mm / 2.72 in
242 mm / 9.53 in
522 mm / 20.55 in
Weight
283 g / 10.00 oz
2000 g / 70.67 oz
3040 g / 107.42 oz
Function
Angle Of View
71.6° Diagonal | 61.9° Horizontal | 43.6° Vertical (wide) ~ 39.7° Diagonal | 33.4° Horizontal | 22.6° Vertical (tele)
16.4° Diagonal | 13.7° Horizontal | 9.1° Vertical (wide) ~ 5.5° Diagonal | 4.6° Horizontal | 3.1° Vertical (tele)
3.0° Diagonal | 2.5° Horizontal | 1.6° Vertical
Aperture
f/2.8–4 ~ f/22–32
f/4.5–5.6 ~ f/22–27
f/5.6 ~ f/45
Autofocus
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
20 mm ~ 40 mm
150 mm ~ 450 mm
560 mm
Focal Length (35mm Equivalent)
30.0 mm ~ 60.0 mm
840.0 mm
Focus Type
Internal
Image Stabilization
No
No
Weather Resistance
Yes
Yes
Zoom Type
External zoom
External zoom (zoom lock available)
Performance
Max Magnification
0.2x
0.22x
Min Focus Distance
280 mm / 11.02 in
2000 mm / 78.74 in
5600 mm / 220.47 in
Production
Accessory
Lens Hood: MH-RA55 (supplied)
Lens Hood: PH-RBA86 (supplied), Tripod mount: O-TM80Lens case: HS120-270
Debut
2013-11-06
2015-02-04
2012-09-10
Reviews
Neofiliac score
50%
31%
16%
Pros
- Weather-sealed
- Beautiful construction for manual focusing
- Great reach at a reasonable price point
- Zoom lock prevents zoom creep
- Weather-sealed
- Comes with a tripod collar
- The longest reach for APS-C
Cons
- External zoom without zoom lock
- Not the most interesting focal range
- Dark maximum aperture
- Large and heavy
- Dark maximum aperture
- Large and heavy like a full-frame lens
- Professionals may prefer FF instead
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