Compare Olympus 9mm F8 Fisheye vs Samyang 7.5mm F3.5 UMC Fisheye
Construction
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
MFT
MFT
Lens Barrel
Physical aperture ring, Distance scale
Lens Mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Material
Plastic
Optical Formula | Elements
5 elements
9 elements
Optical Formula | Groups
4 groups
7 groups
Optical Formula | Special Glass
2 aspherical elements groups
Dimensions
Size | Diameter
56 mm / 2.20 in
60 mm / 2.36 in
Size | Length
13 mm / 0.51 in
48 mm / 1.89 in
Weight
30 g / 1.06 oz
197 g / 6.96 oz
Function
Angle Of View
100.5° Diagonal | 90.0° Horizontal | 67.4° Vertical
180° Diagonal (fisheye)
Aperture
f/8 ~ f/8
f/3.5 ~ f/22
Autofocus
No
No
Crop Factor
2.0
2.0
Focal Length
9 mm
7.5 mm
Focal Length (35mm Equivalent)
18.0 mm
15.0 mm
Focus Type
Internal
Image Stabilization
No
Weather Resistance
No
Performance
Max Magnification
0.046x
Min Focus Distance
200 mm / 7.87 in
90 mm / 3.54 in
Production
Accessory
Lens hood sold separately
Lens Hood: Built-in petal-type hood (supplied)
Debut
2014-01-29
2011-09-05
Reviews
Neofiliac score
48%
50%
Pros
- Negligible size and weight
- Very light and compact
- 180° FOV
Cons
- Dark f/8 aperture
- Lacks front filter thread
- Not a serious lens
- Lacks front filter thread
- Lacks weather sealing
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