Compare Olympus 8mm F1.8 Fisheye PRO vs Samyang 7.5mm F3.5 UMC Fisheye
Construction
Aperture Blades
7 blades, Circular
Colors
Black
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
Motor
Stepper motor
Optical Formula | Elements
17 elements
9 elements
Optical Formula | Groups
15 groups
7 groups
Optical Formula | Special Glass
1 aspherical, 3 super ED, 2 ED, 1 super HR, 2 HR lenses groups
Dimensions
Size | Diameter
62 mm / 2.44 in
60 mm / 2.36 in
Size | Length
80 mm / 3.15 in
48 mm / 1.89 in
Weight
314 g / 11.10 oz
197 g / 6.96 oz
Function
Angle Of View
180° Diagonal (fisheye)
180° Diagonal (fisheye)
Aperture
f/1.8 ~ f/22
f/3.5 ~ f/22
Autofocus
Yes
No
Crop Factor
2.0
2.0
Focal Length
8 mm
7.5 mm
Focal Length (35mm Equivalent)
16.0 mm
15.0 mm
Focus Type
Internal
Image Stabilization
No
No
Weather Resistance
Yes
No
Performance
Max Magnification
0.2x
Min Focus Distance
120 mm / 4.72 in
90 mm / 3.54 in
Production
Accessory
Lens hood included
Lens Hood: Built-in petal-type hood (supplied)
Debut
2015-05-12
2011-09-05
Reviews
Neofiliac score
67%
50%
Pros
- 180° FOV
- Weather-sealed
- Beautifully constructed
- Very light and compact
- 180° FOV
Cons
- Priced higher than full-frame fisheyes
- Lacks front filter thread
- Lacks front filter thread
- Lacks weather sealing
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