Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF vs Sigma 17-50mm F2.8 EX DC OS HSM Detailed Comparison

Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF vs Sigma 17-50mm F2.8 EX DC OS HSM

Lens to replace

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Standard Zoom | Canon EF

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Standard Zoom | Canon EF

Reasons to choose Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF over Sigma 17-50mm F2.8 EX DC OS HSM

Reasons to choose Sigma 17-50mm F2.8 EX DC OS HSM over Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF

Image Stabilization	Yes vs None	Sharper Images

Tamron 17-50mm f2.8 XR II LD vs Sigma 17-50mm F2.8 EX DC OS HSM Specs Table

Detailed comparison of specifications

General	Tamron 17-50mm f2.8 XR II LD	Sigma 17-50mm F2.8 EX DC OS HSM
Brand	Tamron	Sigma
Lens Type	Zoom	Zoom
Price	$299.00	$322.57
Lens Type	Standard Zoom	Standard Zoom
Lens Mount	Canon EF	Canon EF
Max Format	APS-C / DX	APS-C / DX
Focal Range	17-50mm	17-50mm
Image Stabilization	No	Yes
Colour	Black	Unknown
Zoom Method	Rotary (extending)	Rotary (extending)
Power Zoom	-	-
Zoom Lock	Yes	-
Zoom Ratio	2.9X	2.9X
Aperture
Max Aperture	F2.8	F2.8
Min Aperture	F32.0	F22.0
Aperture Ring	No	No
Diaphragm Blades	7	7
Optics
Optical Elements	16	17
Optical Groups	13	13
Special Elements	2 hybrid aspherical elements 1 LD (Low Dispersion) glass element 1 XR (Extra Refractive) element	2 FLD glass elements 2 glass mold elements 1 hybrid aspherical lens
Focusing
Min Focus Distance	0.27m	0.28m
Max Magnification	0.22X	0.2X
Autofocus	Yes	Yes
AF Motor Type	Micromotor	Ultrasonic
Full Time Manual		No
Focus Method	Internal	Internal
Distance Scale	Yes	Yes
DoF Scale	Yes	No
Distance Scale	Yes	Yes
Focus Distance Limiter	Unknown	No
Physical Specs
Weight	430g	565g
Diameter	74mm	84mm
Length	82mm	92mm
Materials	Unknown	Metal mount
Weather Sealing	Unknown	No
Filter Thread	67mm	77mm
Filter Notes	-	Does not rotate on focusing
Hood Supplied	Yes	Yes
Hood Code	flower shaped hood	Unknown
Tripod Collar	No	No
Optional Accessories	-	-
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