Compare Sigma 16-28mm F2.8 DG DN vs SIGMA 18-50mm F2.8 DC DN vs Tamron 17-70mm F/2.8
Construction
Aperture Blades
9 blades, Rounded blades
7 blades, Rounded blades
9 blades
Colors
Black
Black
Form Factor
Ultra Wide-Angle Zoom Lens
Standard Zoom Lens
Standard Zoom Lens
Image Size
Full-Frame
APS-C
APS-C
Lens Mount
Leica L-mount, Sony E-mount
Leica L-mount, Sony E-mount
Sony E-mount
Motor
Stepper motor
Stepper motor
Stepper motor
Optical Formula | Elements
16 elements
13 elements
16 elements
Optical Formula | Groups
11 groups
10 groups
12 groups
Optical Formula | Special Glass
5 FLD, 4 aspherical groups
1 Super Low Dispersion and 3 aspherical elements groups
1 aspherical + 2 glass-molded aspherical elements groups
Dimensions
Filter Diameter
72 mm / 2.83 in
55 mm / 2.17 in
67 mm / 2.64 in
Size | Diameter
77 mm / 3.03 in
65 mm / 2.56 in
75 mm / 2.95 in
Size | Length
101 mm / 3.98 in
75 mm / 2.95 in
119 mm / 4.69 in
Weight
450 g / 15.90 oz
290 g / 10.25 oz
525 g / 18.55 oz
Function
Angle Of View
107.1° Diagonal | 96.7° Horizontal | 73.7° Vertical (wide) ~ 75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical (tele)
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/2.8 ~ f/22
f/2.8 ~ f/22
f/2.8 ~ f/22
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
1.5
Focal Length
16 mm ~ 28 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
Yes
Weather Resistance
Yes
Yes
Yes
Zoom Type
Internal zoom
External zoom
External zoom
Performance
Max Magnification
0.18x
0.21x
Min Focus Distance
250 mm / 9.84 in
120 mm / 4.72 in
190 mm / 7.48 in
Production
Accessory
Lens Hood: LH756-01 (supplied)
Lens Hood: LH582-02 (supplied)
Lens hood included
Debut
2022-06-01
2021-10-19
2020-12-03
Made In
Japan
Model Name
B070
Reviews
Neofiliac score
76%
55%
69%
Pros
- Internal zoom
- Weather-sealed
- Good image quality
- Quite compact for what it is
- Constant f/2.8 aperture
- Very sharp wide open
- Dust and splash protection
- Optically stabilized
- Weather-sealed
- Fast AF
- Good image quality
Cons
- External zoom without zoom lock
- Not stabilized
- External zoom without zoom lock
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