Compare Samyang 20mm F1.8 ED AS UMC vs Pentax 05 Toy Lens Telephoto vs Pentax 06 Telephoto 15-45mm
Construction
Aperture Blades
7 blades
Form Factor
Ultra Wide-Angle Prime Lens
Short Telephoto Prime Lens
Telephoto Zoom Lens
Image Size
Full-Frame
1/1.7"
1/1.7"
Lens Barrel
Physical aperture ring, Distance scale
Lens Mount
Canon EF-mount, Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Nikon F-mount, Pentax K-mount, Samsung NX-mount, Sony A-mount, Sony E-mount
Pentax Q-mount
Pentax Q-mount
Material
Plastic mount
Optical Formula | Elements
13 elements
3 elements
14 elements
Optical Formula | Groups
12 groups
3 groups
10 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Dimensions
Filter Diameter
77 mm / 3.03 in
40.5 mm / 1.59 in
Size | Diameter
83 mm / 3.27 in
41 mm / 1.61 in
50 mm / 1.97 in
Size | Length
88 mm / 3.46 in
20 mm / 0.79 in
56 mm / 2.20 in
Weight
497 g / 17.56 oz
18 g / 0.64 oz
90 g / 3.18 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
29.3° Diagonal | 24.5° Horizontal | 16.5° Vertical
34.8° Diagonal | 29.2° Horizontal | 19.7° Vertical (wide) ~ 11.9° Diagonal | 9.9° Horizontal | 6.6° Vertical (tele)
Aperture
f/1.8 ~ f/22
f/8
f/2.8
Autofocus
No
No
Crop Factor
4.6
4.6
Focal Length
20 mm
18 mm
15 mm ~ 45 mm
Focal Length (35mm Equivalent)
82.8 mm
69.0 mm ~ 207.0 mm
Focus Type
Internal
Image Stabilization
No
Weather Resistance
No
Performance
Max Magnification
0.08x
0.05x
Min Focus Distance
200 mm / 7.87 in
270 mm / 10.63 in
1000 mm / 39.37 in
Production
Accessory
Lens hood included
Debut
2016-08-08
2011-06-23
2012-09-10
Reviews
Neofiliac score
59%
50%
50%
Pros
- Rather affordable
- Very, very compact and lightweight
- Very light and compact
- Good reach
- Has a metal mount
- Has built-in ND filter
Cons
- Lacks weather sealing
- Not the highest grade of build
- Dark and fixed aperture
- Not a serious lens
- Low maximum magnification
- Not very strong optically
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