Compare Samyang 7.5mm F3.5 UMC Fisheye vs Panasonic DG 15mm F1.7 vs Panasonic G 25mm F1.7
Construction
Aperture Blades
7 blades, Circular blades
Form Factor
Ultra Wide-Angle Prime Lens
Wide-Angle Prime Lens
Normal Prime Lens
Image Size
MFT
MFT
MFT
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring
Lens Mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Micro Four Thirds-mount
Motor
Stepper motor
Stepper motor
Optical Formula | Elements
9 elements
9 elements
8 elements
Optical Formula | Groups
7 groups
7 groups
7 groups
Optical Formula | Special Glass
3 aspherical elements groups
2 aspherical + 1 UHR element groups
Dimensions
Filter Diameter
46 mm / 1.81 in
46 mm / 1.81 in
Size | Diameter
60 mm / 2.36 in
58 mm / 2.28 in
61 mm / 2.40 in
Size | Length
48 mm / 1.89 in
36 mm / 1.42 in
52 mm / 2.05 in
Weight
197 g / 6.96 oz
115 g / 4.06 oz
125 g / 4.42 oz
Function
Angle Of View
180° Diagonal (fisheye)
71.6° Diagonal | 61.9° Horizontal | 43.6° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/3.5 ~ f/22
f/1.7 ~ f/16
f/1.7 ~ f/22
Autofocus
No
Yes
Yes
Crop Factor
2.0
2.0
2.0
Focal Length
7.5 mm
15 mm
25 mm
Focal Length (35mm Equivalent)
15.0 mm
30.0 mm
50.0 mm
Focus Type
Internal
Image Stabilization
No
No
Weather Resistance
No
No
Performance
Max Magnification
0.1x
0.14x
Min Focus Distance
90 mm / 3.54 in
200 mm / 7.87 in
250 mm / 9.84 in
Production
Accessory
Lens Hood: Built-in petal-type hood (supplied)
Lens hood included
Debut
2011-09-05
2014-03-24
2015-09-02
Model Name
H-X015
H-H025
Reviews
Neofiliac score
50%
78%
60%
Pros
- Very light and compact
- 180° FOV
- Compact and lightweight
- Comes with physical aperture ring
- Compact and lightweight
- Good but not special optically
Cons
- Lacks front filter thread
- Lacks weather sealing
- Not the best optical performance
- Leica tax
- Lacks weather sealing
- Average build quality
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