Compare Sigma 20mm F1.4 DG HSM vs Sigma 24-105mm F4 DG OS HSM vs Sony 24-70mm F2.8 ZA SSM II
Construction
Aperture Blades
9 blades, Rounded blades
9 blades, Rounded diaphragm
9 blades, Circular aperture
Colors
Black
Black
Form Factor
Ultra Wide-Angle Prime Lens
Standard Zoom Lens
Standard Zoom Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Distance scale
Distance scale
Distance scale
Lens Mount
Canon EF-mount, Nikon F-mount, Sigma SA-mount, Sony E-mount, Leica L-mount
Canon EF-mount, Nikon F-mount, Sigma SA-mount, Sony A-mount
Sony A-mount
Motor
Ring-type ultrasonic
Ring-type ultrasonic
Ring-type ultrasonic
Optical Formula | Elements
15 elements
19 elements
17 elements
Optical Formula | Groups
11 groups
14 groups
13 groups
Optical Formula | Special Glass
Two FLD, five SLD elements + Super Multi-Layer coating groups
2 ED, 2 aspherical elements plus T* coating groups
Dimensions
Filter Diameter
82 mm / 3.23 in
77 mm / 3.03 in
Size | Diameter
91 mm / 3.58 in
89 mm / 3.50 in
83 mm / 3.27 in
Size | Length
130 mm / 5.12 in
109 mm / 4.29 in
111 mm / 4.37 in
Weight
950 g / 33.57 oz
885 g / 31.27 oz
974 g / 34.42 oz
Function
Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 23.3° Diagonal | 19.5° Horizontal | 13.0° Vertical (tele)
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 34.4° Diagonal | 28.8° Horizontal | 19.5° Vertical (tele)
Aperture
f/1.4 ~ f/16
f/4 ~ f/22
f/2.8 ~ f/22
Autofocus
Yes
Yes
Yes
Focal Length
20 mm
24 mm ~ 105 mm
24 mm ~ 70 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
No
Yes
No
Weather Resistance
No
Yes
Zoom Type
External zoom
External zoom
Performance
Max Magnification
0.14x
0.22x
0.25x
Min Focus Distance
300 mm / 11.81 in
450 mm / 17.72 in
340 mm / 13.39 in
Production
Accessory
Lens hood included
Lens hood included
Lens Hood: ALC-SH101 (supplied)
Debut
2015-10-16
2013-10-16
2015-04-23
Made In
Japan
Japan
Model Name
SAL-2470Z2
Reviews
Neofiliac score
55%
55%
62%
Pros
- High level of resolution
- Bright maximum aperture
- Optically stabilized
- Very well built
- Weather-sealed
- Beautifully built
- Good optical performance
Cons
- Large and heavy
- Lacks front filter thread
- Lacks weather sealing
- Dark maximum aperture
- On the heavy side
- External zoom without zoom lock
- One of the lesser
- On the heavy side
- External zoom without zoom lock
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