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Sigma 17-50mm F2.8 EX DC OS HSM for F(DX) Mount vs Sigma 20-60mm f/2.8-4 DG Contemporary

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Optics
Focal Length
17-50mm
20-60mm
Zoom Ratio
2.9x
3x
Max Aperture
f/2.8
f/2.8
Min Aperture
f/22
f/32
Elements / Groups
17 / 13
15 / 13
Special Elements
2 FLD glass elements 2 glass mold elements 1 hybrid aspherical lens
3 SLD elements, 3 aspherical elements
Diaphragm Blades
7
9
Max Magnification
0.2x
0.43x
Coatings
-
Water- and oil-repellent front coating
Optical correction & RAW development
Focus
Min Focus Dist.
28cm
15.8cm
Autofocus
AF Motor Type
Ultrasonic
HLA
Focus Method
Internal
-
Full-time Manual
Distance Scale
Focus Limiter
Physical
Lens Mount
Nikon F
Leica L
Weight
565 g
385 g
Dimensions (D x L)
84 x 92 mm
72 x 86 mm
Filter Thread
77 mm
67 mm
Weather Sealing
Hood Supplied
Tripod Collar
Features
Image Stabilization
Zoom Method
Rotary (Extending)
External
Power Zoom
Zoom Lock
Aperture Ring
Breathing Correction
Parfocal
Custom Buttons
0
0
Color
Unknown
Black
General
Sensor Format
APS-C
Full Frame
Launch Price
-
USD 849
Announce Date
-
Sep 8, 2026