Compare Olympus 8-25mm F4 Pro vs Olympus 9mm F8 Fisheye vs Olympus 8mm F1.8 Fisheye PRO
Construction
Aperture Blades
7 blades
7 blades, Circular
Colors
Black
Black
Form Factor
Zoom Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
MFT
MFT
MFT
Lens Barrel
Distance scale
Lens Mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Material
Magnesium alloy
Plastic
Motor
Linear Motor
Stepper motor
Optical Formula | Elements
16 elements
5 elements
17 elements
Optical Formula | Groups
10 groups
4 groups
15 groups
Optical Formula | Special Glass
1 DSA + 1 Super ED + 1 ED + 1 HR + 2 aspherical ED elements, ZERO coating groups
2 aspherical elements groups
1 aspherical, 3 super ED, 2 ED, 1 super HR, 2 HR lenses groups
Dimensions
Filter Diameter
72 mm / 2.83 in
Size | Diameter
77 mm / 3.03 in
56 mm / 2.20 in
62 mm / 2.44 in
Size | Length
89 mm / 3.50 in
13 mm / 0.51 in
80 mm / 3.15 in
Weight
411 g / 14.52 oz
30 g / 1.06 oz
314 g / 11.10 oz
Function
Angle Of View
107.1° Diagonal | 96.7° Horizontal | 73.7° Vertical (wide) ~ 46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical (tele)
100.5° Diagonal | 90.0° Horizontal | 67.4° Vertical
180° Diagonal (fisheye)
Aperture
f/4 ~ f/22
f/8 ~ f/8
f/1.8 ~ f/22
Autofocus
Yes
No
Yes
Crop Factor
2.0
2.0
2.0
Focal Length
8 mm ~ 25 mm
9 mm
8 mm
Focal Length (35mm Equivalent)
16.0 mm ~ 50.0 mm
18.0 mm
16.0 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
Weather Resistance
Yes
Yes
Zoom Type
External zoom
Performance
Max Magnification
0.14x
0.046x
0.2x
Min Focus Distance
230 mm / 9.06 in
200 mm / 7.87 in
120 mm / 4.72 in
Production
Accessory
Lens hood included
Lens hood sold separately
Lens hood included
Debut
2021-06-09
2014-01-29
2015-05-12
Reviews
Neofiliac score
48%
48%
67%
Pros
- Very appealing ultra-wide to normal focal range
- Beautifully constructed
- Weather-sealed
- Good IQ
- Negligible size and weight
- 180° FOV
- Weather-sealed
- Beautifully constructed
Cons
- Dark maximum aperture
- External zoom without zoom lock
- Rather expensive for MFT
- Dark f/8 aperture
- Lacks front filter thread
- Not a serious lens
- Priced higher than full-frame fisheyes
- Lacks front filter thread
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