Compare Olympus 8mm F1.8 Fisheye PRO vs Olympus 20mm F1.4 Pro vs Olympus 25mm F1.8
Construction
Aperture Blades
7 blades, Circular
9 blades, Circular aperture diaphragm
7 blades, Circular aperture diaphragm
Colors
Black
Black or Silver
Form Factor
Ultra Wide-Angle Prime Lens
Normal Prime Lens
Normal Prime Lens
Image Size
MFT
MFT
MFT
Lens Mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Motor
Stepper motor
Stepper motor
Stepper motor
Optical Formula | Elements
17 elements
11 elements
9 elements
Optical Formula | Groups
15 groups
10 groups
7 groups
Optical Formula | Special Glass
1 aspherical, 3 super ED, 2 ED, 1 super HR, 2 HR lenses groups
1 x Super ED, 3 ED, 2 Super HR, 2 Aspherical groups
2 aspherical elements groups
Dimensions
Filter Diameter
58 mm / 2.28 in
46 mm / 1.81 in
Size | Diameter
62 mm / 2.44 in
63 mm / 2.48 in
56 mm / 2.20 in
Size | Length
80 mm / 3.15 in
62 mm / 2.44 in
41 mm / 1.61 in
Weight
314 g / 11.10 oz
247 g / 8.73 oz
136 g / 4.81 oz
Function
Angle Of View
180° Diagonal (fisheye)
56.8° Diagonal | 48.5° Horizontal | 33.4° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/1.8 ~ f/22
f/1.4 ~ f/16
f/1.8 ~ f/22
Autofocus
Yes
Yes
Yes
Crop Factor
2.0
2.0
2.0
Focal Length
8 mm
20 mm
25 mm
Focal Length (35mm Equivalent)
16.0 mm
40.0 mm
50.0 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
Yes
Yes
Performance
Max Magnification
0.2x
0.11x
0.12x
Min Focus Distance
120 mm / 4.72 in
250 mm / 9.84 in
240 mm / 9.45 in
Production
Accessory
Lens hood included
Lens Hood: LH-61G (supplied)
Lens Hood: LH-49B (supplied)
Debut
2015-05-12
2021-11-04
2014-01-29
Reviews
Neofiliac score
67%
84%
76%
Pros
- 180° FOV
- Weather-sealed
- Beautifully constructed
- Bright maximum aperture
- Light in the hand
- Weather-sealed
- Beautifully constructed
- Compact and lightweight
Cons
- Priced higher than full-frame fisheyes
- Lacks front filter thread
- No aperture ring or other features on the barrel
- Not the sharpest normal lens
- Not competitively priced
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