Compare Sony 100mm F2.8 STF GM vs Sony 24-70mm F2.8 GM vs Sony 28-70mm F3.5-5.6
Construction
Aperture Blades
11 blades
9 blades
7 blades
Colors
Black
Black
Form Factor
Short Telephoto Prime Lens
Standard Zoom Lens
Standard Zoom Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Focus limiter
Lens Mount
Sony E-mount
Sony E-mount
Sony E-mount
Motor
Piezoelectric
Piezoelectric
Stepper motor
Optical Formula | Elements
14 elements
18 elements
9 elements
Optical Formula | Groups
10 groups
13 groups
8 groups
Optical Formula | Special Glass
ED and aspherical elements, Nano AR coating groups
One extreme aspherical, one super ED, one ED element + Nano AR coating groups
3 aspheric elements, 1 ED glass element groups
Dimensions
Filter Diameter
72 mm / 2.83 in
82 mm / 3.23 in
55 mm / 2.17 in
Size | Diameter
85 mm / 3.35 in
88 mm / 3.46 in
73 mm / 2.87 in
Size | Length
118 mm / 4.65 in
136 mm / 5.35 in
95 mm / 3.74 in
Weight
700 g / 24.73 oz
886 g / 31.31 oz
426 g / 15.05 oz
Function
Angle Of View
24.4° Diagonal | 20.4° Horizontal | 13.7° Vertical
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 34.4° Diagonal | 28.8° Horizontal | 19.5° Vertical (tele)
75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical (wide) ~ 34.4° Diagonal | 28.8° Horizontal | 19.5° Vertical (tele)
Aperture
f/2.8 ~ f/20
f/2.8 ~ f/22
f/3.5–5.6 ~ f/22
Autofocus
Yes
Yes
Yes
Focal Length
100 mm
24 mm ~ 70 mm
28 mm ~ 70 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
Yes
No
Yes
Weather Resistance
Yes
Yes
Zoom Type
External zoom (zoom lock available)
External zoom
Performance
Max Magnification
0.25x
0.24x
0.2x
Min Focus Distance
570 mm / 22.44 in
380 mm / 14.96 in
400 mm / 15.75 in
Production
Accessory
Lens Hood: ALC-SH174 (supplied)
Lens Hood: ALC-SH141 (supplied)
Lens Hood: ALC-SH130 (supplied)
Debut
2017-02-07
2016-02-03
2013-10-16
Model Name
SEL100F28GM
SEL2470GM
SEL2870
Reviews
Neofiliac score
88%
52%
71%
Pros
- The smoothest bokeh
- Optically stabilized
- Weather-sealed
- Declickable aperture ring
- Superb autofocus
- Zoom lock prevents zoom creep
- Weather-sealed
- Quite useful f/2.8 constant aperture
- Optically stabilized
Cons
- Low light transmission
- STF appeals only to bokeh addicts
- Large and heavy
- Not very sharp
- Not stabilized
- External zoom without zoom lock
- The original FE kit lens
- Not very sharp
- Cheaply built
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