Compare Samyang 20mm F1.8 ED AS UMC vs Panasonic G Fisheye 8mm F3.5 vs Samyang 7.5mm F3.5 UMC Fisheye
Construction
Aperture Blades
7 blades
7 blades, rounded blades
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
Full-Frame
MFT
MFT
Lens Barrel
Physical aperture ring, Distance scale
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
Micro Four Thirds-mount
Micro Four Thirds-mount
Motor
Micromotor
Optical Formula | Elements
13 elements
10 elements
9 elements
Optical Formula | Groups
12 groups
9 groups
7 groups
Optical Formula | Special Glass
Two aspherical + 3 ED elements, Ultra Multi Coating groups
1 ED glass element groups
Dimensions
Filter Diameter
77 mm / 3.03 in
Size | Diameter
83 mm / 3.27 in
61 mm / 2.40 in
60 mm / 2.36 in
Size | Length
88 mm / 3.46 in
52 mm / 2.05 in
48 mm / 1.89 in
Weight
497 g / 17.56 oz
165 g / 5.83 oz
197 g / 6.96 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
180° Diagonal
180° Diagonal (fisheye)
Aperture
f/1.8 ~ f/22
f/3.5 ~ f/22
f/3.5 ~ f/22
Autofocus
No
Yes
No
Crop Factor
2.0
2.0
Focal Length
20 mm
8 mm
7.5 mm
Focal Length (35mm Equivalent)
16.0 mm
15.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
No
No
Performance
Max Magnification
0.2x
Min Focus Distance
200 mm / 7.87 in
100 mm / 3.94 in
90 mm / 3.54 in
Production
Accessory
Lens hood included
Lens Hood: built-in hood (supplied)
Lens Hood: Built-in petal-type hood (supplied)
Debut
2016-08-08
2010-06-01
2011-09-05
Reviews
Neofiliac score
59%
60%
50%
Pros
- Rather affordable
- 180° FOV
- Compact and lightweight
- Very light and compact
- 180° FOV
Cons
- Lacks weather sealing
- Not the highest grade of build
- Lacks front filter thread
- Lacks front filter thread
- Lacks weather sealing
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