Compare Samyang 300mm F6.3 ED UMC CS vs Samyang 20mm F1.8 ED AS UMC vs Zeiss Loxia 85mm F2.4
Construction
Aperture Blades
7 blades
Form Factor
Super Telephoto Prime Lens
Ultra Wide-Angle Prime Lens
Short Telephoto Prime Lens
Image Size
APS-C
Full-Frame
Full-Frame
Lens Barrel
Distance scale
Physical aperture ring, Distance scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Canon EF-mount, Micro Four Thirds-mount, Nikon F-mount, Sony A-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
Sony E-mount
Optical Formula | Elements
8 elements
13 elements
7 elements
Optical Formula | Groups
8 groups
12 groups
7 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
3 APD elements, Zeiss T* coating groups
Dimensions
Filter Diameter
25.5 mm / 1.00 in
77 mm / 3.03 in
52 mm / 2.05 in
Size | Diameter
65 mm / 2.56 in
83 mm / 3.27 in
63 mm / 2.48 in
Size | Length
74 mm / 2.91 in
88 mm / 3.46 in
95 mm / 3.74 in
Weight
260 g / 9.19 oz
497 g / 17.56 oz
594 g / 20.99 oz
Function
Angle Of View
5.5° Diagonal | 4.6° Horizontal | 3.1° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
28.6° Diagonal | 23.9° Horizontal | 16.1° Vertical
Aperture
f/6.3
f/1.8 ~ f/22
f/2.4 ~ f/22
Autofocus
No
No
No
Crop Factor
1.5
Focal Length
300 mm
20 mm
85 mm
Focal Length (35mm Equivalent)
450.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Performance
Max Magnification
0.14
Min Focus Distance
1100 mm / 43.31 in
200 mm / 7.87 in
800 mm / 31.50 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2014-04-28
2016-08-08
2016-09-15
Made In
Japan
Reviews
Neofiliac score
40%
59%
86%
Pros
- Very light and compact for the focal length
- Affordable for the focal length
- Rather affordable
- Exceptional image quality
- Great build quality
- Declickable aperture ring
Cons
- Reflex / mirror construction results in low IQ
- Dark fixed f/6.3 aperture
- Lacks weather sealing
- Not the highest grade of build
- Not very bright for a prime lens
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