Compare Samyang 7.5mm F3.5 UMC Fisheye vs Pentax 03 Fish-Eye vs Olympus 9mm F8 Fisheye
Construction
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
MFT
1/1.7"
MFT
Lens Barrel
Physical aperture ring, Distance scale
Distance scale
Lens Mount
Micro Four Thirds-mount
Pentax Q-mount
Micro Four Thirds-mount
Material
Plastic mount
Plastic
Optical Formula | Elements
9 elements
6 elements
5 elements
Optical Formula | Groups
7 groups
5 groups
4 groups
Optical Formula | Special Glass
2 aspherical elements groups
Dimensions
Size | Diameter
60 mm / 2.36 in
41 mm / 1.61 in
56 mm / 2.20 in
Size | Length
48 mm / 1.89 in
31 mm / 1.22 in
13 mm / 0.51 in
Weight
197 g / 6.96 oz
29 g / 1.02 oz
30 g / 1.06 oz
Function
Angle Of View
180° Diagonal (fisheye)
173° Diagonal (Q7)
100.5° Diagonal | 90.0° Horizontal | 67.4° Vertical
Aperture
f/3.5 ~ f/22
f/5.6
f/8 ~ f/8
Autofocus
No
No
No
Crop Factor
2.0
4.6
2.0
Focal Length
7.5 mm
3.2 mm
9 mm
Focal Length (35mm Equivalent)
15.0 mm
14.7 mm
18.0 mm
Focus Type
Internal
Image Stabilization
No
Weather Resistance
No
Performance
Max Magnification
0.06x
0.046x
Min Focus Distance
90 mm / 3.54 in
90 mm / 3.54 in
200 mm / 7.87 in
Production
Accessory
Lens Hood: Built-in petal-type hood (supplied)
Lens hood sold separately
Debut
2011-09-05
2011-06-23
2014-01-29
Reviews
Neofiliac score
50%
50%
48%
Pros
- Very light and compact
- 180° FOV
- Extremely light and compact
- 173°FOV
- Negligible size and weight
Cons
- Lacks front filter thread
- Lacks weather sealing
- Dark and fixed f/5.6 aperture
- Not made for IQ
- Dark f/8 aperture
- Lacks front filter thread
- Not a serious lens
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