Compare Samyang 100mm F2.8 ED UMC Macro vs Samyang 20mm F1.8 ED AS UMC vs Pentax 07 Mount Shield Lens
Construction
Aperture Blades
9 blades
7 blades
Form Factor
Short Telephoto Prime Lens
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
1/1.7"
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale
Lens Mount
Canon EF-mount, Fujifilm X-mount, Micro Four Thirds-mount, Nikon F-mount, Pentax K-mount, Samsung NX-mount, Sony A-mount, Sony E-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
Optical Formula | Elements
15 elements
13 elements
1 elements
Optical Formula | Groups
12 groups
12 groups
1 groups
Optical Formula | Special Glass
1 HRI + 1 ED element, Ultra Multi Coating groups
Two aspherical + 3 ED elements, Ultra Multi Coating groups
Dimensions
Filter Diameter
67 mm / 2.64 in
77 mm / 3.03 in
Size | Diameter
73 mm / 2.87 in
83 mm / 3.27 in
41 mm / 1.61 in
Size | Length
123 mm / 4.84 in
88 mm / 3.46 in
7 mm / 0.28 in
Weight
720 g / 25.44 oz
497 g / 17.56 oz
8 g / 0.28 oz
Function
Angle Of View
24.4° Diagonal | 20.4° Horizontal | 13.7° Vertical
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
44.5° Diagonal | 37.6° Horizontal | 25.6° Vertical
Aperture
f/2.8 ~ f/32
f/1.8 ~ f/22
f/9
Autofocus
No
No
No
Crop Factor
4.6
Focal Length
100 mm
20 mm
11.5 mm
Focal Length (35mm Equivalent)
52.9 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
Performance
Max Magnification
1x
Min Focus Distance
310 mm / 12.20 in
200 mm / 7.87 in
300 mm / 11.81 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2015-04-01
2016-08-08
2013-06-12
Reviews
Neofiliac score
59%
59%
40%
Pros
- 1:1 reproduction
- Clear focusing scale
- Rather affordable
- Interesting "body cap" form factor
Cons
- Lacks weather sealing
- Not Samyang's strongest build
- Lacks weather sealing
- Not the highest grade of build
- Limited f/9 aperture
- Image quality was not on the mind of its engineers
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