Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) vs Sigma 50-150mm f/2.8 APO EX DC OS HSM

Both are Nikon F lenses for APS-C. Here is what actually differs.

Tamron

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

f/2.8

Full specs

Sigma

50-150mm f/2.8 APO EX DC OS HSM

f/2.8HSM

Full specs

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

You want a wider view: 17mm vs 50mm at the wide end
You shoot close-ups: it focuses down to 0.27 m vs 0.8 m

Pick the Sigma 50-150mm f/2.8 APO EX DC OS HSM if

You need more reach: 150mm vs 50mm at the long end
You shoot handheld in dim light or video: it has optical image stabilization and the Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) does not

Spec differences

10 differences

Specifications that differ between the Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) and the Sigma 50-150mm f/2.8 APO EX DC OS HSM
	Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF)	Sigma 50-150mm f/2.8 APO EX DC OS HSM
Brand	Tamron	Sigma
Type	Zoom	Telephoto Zoom
Focal length	17-50mm	50-150mm
Filter thread	67 mm	77 mm
Min focus distance	0.27 m closer	0.8 m
Max magnification	not listed	0.16×
Aperture blades	not listed	9
Optical design	not listed	21 elements / 15 groups
Autofocus motor	not listed	HSM
Image stabilization	No	Yes stabilized

3 identical specs hidden: mount, format, max aperture. Show all

Mount: Nikon F both
Format: APS-C both
Max aperture: f/2.8 both

Our notes

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.

Our notes