Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) vs Sigma 17-50mm f/2.8 EX DC OS HSM

Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.

Tamron

SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF)

Sigma

17-50mm f/2.8 EX DC OS HSM

Specification comparison
Spec	SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF)	17-50mm f/2.8 EX DC OS HSM
Brand	Tamron	Sigma
Mount	Nikon F	Nikon F
Type	Zoom	Zoom
Focal length	17-50mm	17-50mm
Max aperture	f/2.8	f/2.8
Format	aps-c	aps-c
Filter mm	67	77
Min focus m	0.27 (closer focusing)	0.28
Blades	n/a	7
Groups	n/a	13
Af motor	n/a	HSM
Elements	n/a	17
Weight g	n/a	565
Length mm	n/a	91.8
Stabilized	n/a	Yes
Diameter mm	n/a	83.5
Max magnification	n/a	0.2

Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF)

A 17-50mm f/2.8 APS-C fast standard zoom lens, the Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) is designed for Nikon F mount bodies, from the Tamron SP series with aspherical elements. A bright standard zoom for APS-C DSLRs with a constant f/2.8 aperture.

Sigma 17-50mm f/2.8 EX DC OS HSM

A stabilized standard zoom for APS-C DSLRs with a constant f/2.8 aperture. It weighs about 565 g and takes 77mm filters.

Pros

Constant f/2.8
Optical stabilization
HSM autofocus
Close focus 0.28 m

Cons

APS-C only
Not weather sealed

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