Compare Samyang 135mm F2.0 ED UMC vs Pentax-D FA* 50mm F1.4
Construction
Aperture Blades
9 blades
9 blades
Colors
Black
Form Factor
Medium Telephoto Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Distance scale
Lens 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
11 elements
15 elements
Optical Formula | 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
77 mm / 3.03 in
72 mm / 2.83 in
Size | Diameter
82 mm / 3.23 in
80 mm / 3.15 in
Size | Length
122 mm / 4.80 in
106 mm / 4.17 in
Weight
830 g / 29.33 oz
910 g / 32.16 oz
Function
Angle Of View
18.2° Diagonal | 15.2° Horizontal | 10.2° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/2 ~ f/22
f/1.4 ~ f/16
Autofocus
No
Yes
Focal Length
135 mm
50 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.18x
Min Focus Distance
800 mm / 31.50 in
400 mm / 15.75 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2015-01-12
2017-10-26
Reviews
Neofiliac score
50%
68%
Pros
- Smooth rendering
- Good resolution
- Bright maximum aperture
- Weather-sealed
- Very sharp
Cons
- On the heavy side
- Lacks weather sealing
- Hard to MF at this focal length
- On the heavy side
- Slow autofocus
Remove
Remove
Add up to 4 products to the comparison using the search bar above
Information on this page is provided on an as-is basis. No warranty on accuracy is implied. This page may contain affiliate links to third-party merchants such as Amazon and eBay. If you make a purchase using the supplied link, we may receive a commission. Neofiliac places the utmost respect for your privacy. We use no cookie whatsoever beyond that needed for the proper functioning of the website.