Compare Olympus 9mm F8 Fisheye vs Samyang 7.5mm F3.5 UMC Fisheye vs Olympus 8mm F1.8 Fisheye PRO
Construction
Aperture Blades
7 blades, Circular
Colors
Black
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
MFT
MFT
MFT
Lens Barrel
Physical aperture ring, Distance scale
Lens Mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Material
Plastic
Motor
Stepper motor
Optical Formula | Elements
5 elements
9 elements
17 elements
Optical Formula | Groups
4 groups
7 groups
15 groups
Optical Formula | Special Glass
2 aspherical elements groups
1 aspherical, 3 super ED, 2 ED, 1 super HR, 2 HR lenses groups
Dimensions
Size | Diameter
56 mm / 2.20 in
60 mm / 2.36 in
62 mm / 2.44 in
Size | Length
13 mm / 0.51 in
48 mm / 1.89 in
80 mm / 3.15 in
Weight
30 g / 1.06 oz
197 g / 6.96 oz
314 g / 11.10 oz
Function
Angle Of View
100.5° Diagonal | 90.0° Horizontal | 67.4° Vertical
180° Diagonal (fisheye)
180° Diagonal (fisheye)
Aperture
f/8 ~ f/8
f/3.5 ~ f/22
f/1.8 ~ f/22
Autofocus
No
No
Yes
Crop Factor
2.0
2.0
2.0
Focal Length
9 mm
7.5 mm
8 mm
Focal Length (35mm Equivalent)
18.0 mm
15.0 mm
16.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
Yes
Performance
Max Magnification
0.046x
0.2x
Min Focus Distance
200 mm / 7.87 in
90 mm / 3.54 in
120 mm / 4.72 in
Production
Accessory
Lens hood sold separately
Lens Hood: Built-in petal-type hood (supplied)
Lens hood included
Debut
2014-01-29
2011-09-05
2015-05-12
Reviews
Neofiliac score
48%
50%
67%
Pros
- Negligible size and weight
- Very light and compact
- 180° FOV
- 180° FOV
- Weather-sealed
- Beautifully constructed
Cons
- Dark f/8 aperture
- Lacks front filter thread
- Not a serious lens
- Lacks front filter thread
- Lacks weather sealing
- Priced higher than full-frame fisheyes
- Lacks front filter thread
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