Compare Olympus 25mm F1.2 Pro vs Samyang 7.5mm F3.5 UMC Fisheye vs Olympus 8mm F1.8 Fisheye PRO
Construction
Aperture Blades
9 blades
7 blades, Circular
Colors
Black
Black
Form Factor
Normal Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
MFT
MFT
MFT
Lens Barrel
Distance scale, DoF scale
Physical aperture ring, Distance scale
Lens Mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Motor
Micromotor
Stepper motor
Optical Formula | Elements
19 elements
9 elements
17 elements
Optical Formula | Groups
14 groups
7 groups
15 groups
Optical Formula | Special Glass
3 HR, 2 ED, 1 E-HR, 1 HR, 1 Super-ED elements + Z Coating Nano groups
1 aspherical, 3 super ED, 2 ED, 1 super HR, 2 HR lenses groups
Dimensions
Filter Diameter
62 mm / 2.44 in
Size | Diameter
70 mm / 2.76 in
60 mm / 2.36 in
62 mm / 2.44 in
Size | Length
87 mm / 3.43 in
48 mm / 1.89 in
80 mm / 3.15 in
Weight
410 g / 14.49 oz
197 g / 6.96 oz
314 g / 11.10 oz
Function
Angle Of View
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
180° Diagonal (fisheye)
180° Diagonal (fisheye)
Aperture
f/1.2 ~ f/16
f/3.5 ~ f/22
f/1.8 ~ f/22
Autofocus
Yes
No
Yes
Crop Factor
2.0
2.0
2.0
Focal Length
25 mm
7.5 mm
8 mm
Focal Length (35mm Equivalent)
50.0 mm
15.0 mm
16.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
No
Weather Resistance
Yes
No
Yes
Performance
Max Magnification
0.11x
0.2x
Min Focus Distance
190 mm / 7.48 in
90 mm / 3.54 in
120 mm / 4.72 in
Production
Accessory
Lens Hood: LH-66B (supplied)
Lens Hood: Built-in petal-type hood (supplied)
Lens hood included
Debut
2016-09-19
2011-09-05
2015-05-12
Reviews
Neofiliac score
76%
50%
67%
Pros
- High resolution
- Bright maximum aperture
- Weather-sealed
- Beautiful rendering
- High grade of construction
- Very light and compact
- 180° FOV
- 180° FOV
- Weather-sealed
- Beautifully constructed
Cons
- Priced like full-frame
- Lacks front filter thread
- Lacks weather sealing
- Priced higher than full-frame fisheyes
- Lacks front filter thread
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