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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
Focus
Min Focus Dist.
28cm
15.8cm
Autofocus
AF Motor Type
Ultrasonic
HLA
Focus Method
internal
-
Full-time Manual
Distance Scale
Focus Limiter
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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)
-
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