Compare Sony 100mm F2.8 STF GM vs Sony 24-70mm F2.8 GM vs Sony 85mm F1.4 GM
Construction
Aperture Blades
11 blades
9 blades
11 blades
Colors
Black
Black
Black
Form Factor
Short Telephoto Prime Lens
Standard Zoom Lens
Short Telephoto Prime Lens
Image Size
Full-Frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Focus limiter
Physical aperture ring
Lens Mount
Sony E-mount
Sony E-mount
Sony E-mount
Motor
Piezoelectric
Piezoelectric
Ring-type ultrasonic
Optical Formula | Elements
14 elements
18 elements
11 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
Extreme Aspherical, Super ED, ED elements + Nano AR coating groups
Dimensions
Filter Diameter
72 mm / 2.83 in
82 mm / 3.23 in
77 mm / 3.03 in
Size | Diameter
85 mm / 3.35 in
88 mm / 3.46 in
90 mm / 3.54 in
Size | Length
118 mm / 4.65 in
136 mm / 5.35 in
108 mm / 4.25 in
Weight
700 g / 24.73 oz
886 g / 31.31 oz
820 g / 28.98 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)
28.6° Diagonal | 23.9° Horizontal | 16.1° Vertical
Aperture
f/2.8 ~ f/20
f/2.8 ~ f/22
f/1.4 ~ f/16
Autofocus
Yes
Yes
Yes
Focal Length
100 mm
24 mm ~ 70 mm
85 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
Yes
No
No
Weather Resistance
Yes
Yes
Yes
Zoom Type
External zoom (zoom lock available)
Performance
Max Magnification
0.25x
0.24x
0.12x
Min Focus Distance
570 mm / 22.44 in
380 mm / 14.96 in
800 mm / 31.50 in
Production
Accessory
Lens Hood: ALC-SH174 (supplied)
Lens Hood: ALC-SH141 (supplied)
Lens Hood: ALC-SH142 (supplied)
Debut
2017-02-07
2016-02-03
2016-02-03
Model Name
SEL100F28GM
SEL2470GM
SEL85F14GM
Reviews
Neofiliac score
88%
52%
88%
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
- Bright maximum aperture
- Weather-sealed
- Declickable aperture ring
- Smooth bokeh
- Rather sharp
Cons
- Low light transmission
- STF appeals only to bokeh addicts
- Large and heavy
- Not very sharp
- Not stabilized
- On the heavy side
- Slow autofocus
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