Compare SIGMA 35mm F2 DG DN vs SIGMA 18-50mm F2.8 DC DN vs Tamron 17-70mm F/2.8
Construction
Aperture Blades
9 blades
7 blades, Rounded blades
9 blades
Colors
Black
Black
Black
Form Factor
Wide-Angle Prime Lens
Standard Zoom Lens
Standard Zoom Lens
Image Size
Full-Frame
APS-C
APS-C
Lens Barrel
Physical aperture ring
Lens Mount
Leica L-mount, Sony E-mount
Leica L-mount, Sony E-mount
Sony E-mount
Material
Magnesium alloy
Motor
Stepper motor
Stepper motor
Stepper motor
Optical Formula | Elements
10 elements
13 elements
16 elements
Optical Formula | Groups
9 groups
10 groups
12 groups
Optical Formula | Special Glass
1 SLD + 3 aspherical elements, Super Multi-Layer coating groups
1 Super Low Dispersion and 3 aspherical elements groups
1 aspherical + 2 glass-molded aspherical elements groups
Dimensions
Filter Diameter
58 mm / 2.28 in
55 mm / 2.17 in
67 mm / 2.64 in
Size | Diameter
70 mm / 2.76 in
65 mm / 2.56 in
75 mm / 2.95 in
Size | Length
65 mm / 2.56 in
75 mm / 2.95 in
119 mm / 4.69 in
Weight
325 g / 11.48 oz
290 g / 10.25 oz
525 g / 18.55 oz
Function
Angle Of View
63.5° Diagonal | 54.4° Horizontal | 37.8° Vertical
77.4° Diagonal | 67.4° Horizontal | 47.9° Vertical (wide) ~ 32.2° Diagonal | 27.0° Horizontal | 18.2° Vertical (tele)
80.7° Diagonal | 70.4° Horizontal | 50.4° Vertical (wide) ~ 23.3° Diagonal | 19.5° Horizontal | 13.0° Vertical (tele)
Aperture
f/2 ~ f/22
f/2.8 ~ f/22
f/2.8 ~ f/22
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
35 mm
18 mm ~ 50 mm
17 mm ~ 70 mm
Focal Length (35mm Equivalent)
27.0 mm ~ 75.0 mm
25.5 mm ~ 105.0 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
No
Yes
Weather Resistance
Yes
Yes
Yes
Zoom Type
External zoom
External zoom
Performance
Max Magnification
0.18x
0.21x
Min Focus Distance
270 mm / 10.63 in
120 mm / 4.72 in
190 mm / 7.48 in
Production
Accessory
Lens hood included
Lens Hood: LH582-02 (supplied)
Lens hood included
Debut
2020-12-01
2021-10-19
2020-12-03
Made In
Japan
Japan
Model Name
B070
Reviews
Neofiliac score
83%
55%
69%
Pros
- Excellent build quality
- Very sharp
- High contrast
- Weather-sealed
- Comes with physical aperture ring
- Fast autofocus
- Constant f/2.8 aperture
- Very sharp wide open
- Dust and splash protection
- Optically stabilized
- Weather-sealed
- Fast AF
- Good image quality
Cons
- Aperture ring cannot be switched to clickless
- Focus breathing is visible
- External zoom without zoom lock
- Not stabilized
- External zoom without zoom lock
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