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Sigma 17-50mm F2.8 EX DC OS HSM for F(DX) Mount vs Sigma 50-120mm f/2.8 DC DN

Lens

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Optics
Focal Length
17-50mm
50-120mm
Zoom Ratio
2.9x
2.4x
Max Aperture
f/2.8
f/2.8
Min Aperture
f/22
f/22
Elements / Groups
17 / 13
18 / 13
Special Elements
2 FLD glass elements 2 glass mold elements 1 hybrid aspherical lens
1 FLD, 3 SLD, 4 Aspherical
Diaphragm Blades
7
11
Max Magnification
0.2x
0.33x
Coatings
-
Super Multi-Layer Coating, Water and Oil Repellent Coating
Optical correction & RAW development
Focus
Min Focus Dist.
28cm
23cm
Autofocus
AF Motor Type
Ultrasonic
HLA
Focus Method
Internal
Internal
Full-time Manual
Distance Scale
Focus Limiter
Physical
Lens Mount
Nikon F
Sony E
Weight
565 g
390 g
Dimensions (D x L)
84 x 92 mm
67 x 99 mm
Filter Thread
77 mm
55 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
1
Color
Unknown
Black
General
Sensor Format
APS-C
APS-C
Launch Price
-
USD 799
Announce Date
-
Oct 8, 2026