Compare KamLan 28mm F1.4 vs 7Artisans 25mm F1.8 vs Viltrox 33mm F1.4
Variants
X-Mount
E-Mount
EF-M-Mount
Connectivity
Ports
Micro-USB
Construction
Aperture Blades
11 blades
7 blades
9
Colors
Black
Form Factor
Normal Prime Lens
Normal Prime Lens
Image Size
APS-C
APS-C
APS-C
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Sony E-mount
Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Sony E-mount
E-mount, X-mount, EF-M-mount
Material
Aluminum
Motor
STM+Lead screw stepping motor
Optical Formula | Elements
8 elements
7 elements
10 elements
Optical Formula | Groups
7 groups
5 groups
9 groups
Optical Formula | Special Glass
6 HRI elements groups
Dimensions
Filter Diameter
52 mm / 2.05 in
46 mm / 1.81 in
52 mm
Size | Diameter
55 mm / 2.17 in
51 mm / 2.01 in
65 mm
Size | Length
65 mm / 2.56 in
32 mm / 1.26 in
72 mm
Weight
384 g / 13.57 oz
143 g / 5.05 oz
270 g
Function
Angle Of View
54.5° Diagonal | 46.4° Horizontal | 31.9° Vertical
60.0° Diagonal | 51.3° Horizontal | 35.5° Vertical
45.2°
Aperture
f/1.4 ~ f/16
f/1.8 ~ f/22
F/1.4 - f/16
Autofocus
No
No
Crop Factor
1.5
1.5
Focal Length
28 mm
25 mm
33 mm
Focal Length (35mm Equivalent)
42.0 mm
37.5 mm
50 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
Performance
Max Magnification
0.15x
0.1x
Min Focus Distance
250 mm / 9.84 in
180 mm / 7.09 in
0.4 m
Production
Debut
2018-06-01
2017-06-28
2020
Reviews
Neofiliac score
59%
59%
Pros
- Bright maximum aperture
- Smooth rendering
- Rather sharp for what it is
- Short barrel
- Light in the hand
- Appears well-built
- F1.4 aperture
- Fast autofocus
- Easy to use
- Good color reproduction
Cons
- Not the highest build grade
- Lacks weather sealing
- Not the strongest in optical performance
- Clickless aperture is not fully silent
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