Compare Samyang 300mm F6.3 ED UMC CS vs Samyang 135mm F2.0 ED UMC vs Pentax-D FA* 50mm F1.4
Construction
Aperture Blades
9 blades
9 blades
Colors
Black
Form Factor
Super Telephoto Prime Lens
Medium Telephoto Prime Lens
Normal Prime Lens
Image Size
APS-C
Full-Frame
Full-Frame
Lens Barrel
Distance scale
Physical aperture ring, Distance scale, DoF scale
Distance scale
Lens Mount
Canon EF-mount, Micro Four Thirds-mount, Nikon F-mount, Sony A-mount
Canon EF-mount, Canon EF-M-mount, Micro Four Thirds-mount, Fujifilm X-mount, Micro Four Thirds-mount, Nikon F-mount, Pentax K-mount, Samsung NX-mount, Sony A-mount, Sony E-mount
Pentax K-mount
Motor
Ring-type ultrasonic
Optical Formula | Elements
8 elements
11 elements
15 elements
Optical Formula | Groups
8 groups
7 groups
9 groups
Optical Formula | Special Glass
1 ED element, Ultra Multi Coating groups
1 aspherical + 3 anamalous dispersion elements, Aero Bright II + HD + Super Protect coatings groups
Dimensions
Filter Diameter
25.5 mm / 1.00 in
77 mm / 3.03 in
72 mm / 2.83 in
Size | Diameter
65 mm / 2.56 in
82 mm / 3.23 in
80 mm / 3.15 in
Size | Length
74 mm / 2.91 in
122 mm / 4.80 in
106 mm / 4.17 in
Weight
260 g / 9.19 oz
830 g / 29.33 oz
910 g / 32.16 oz
Function
Angle Of View
5.5° Diagonal | 4.6° Horizontal | 3.1° Vertical
18.2° Diagonal | 15.2° Horizontal | 10.2° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/6.3
f/2 ~ f/22
f/1.4 ~ f/16
Autofocus
No
No
Yes
Crop Factor
1.5
Focal Length
300 mm
135 mm
50 mm
Focal Length (35mm Equivalent)
450.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.18x
Min Focus Distance
1100 mm / 43.31 in
800 mm / 31.50 in
400 mm / 15.75 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2014-04-28
2015-01-12
2017-10-26
Reviews
Neofiliac score
40%
50%
68%
Pros
- Very light and compact for the focal length
- Affordable for the focal length
- Smooth rendering
- Good resolution
- Bright maximum aperture
- Weather-sealed
- Very sharp
Cons
- Reflex / mirror construction results in low IQ
- Dark fixed f/6.3 aperture
- On the heavy side
- Lacks weather sealing
- Hard to MF at this focal length
- On the heavy side
- Slow autofocus
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