Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF vs Canon EF 17-40mm f4.0L USM Detailed Comparison

Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF vs Canon EF 17-40mm f4.0L USM

Lens to replace

Change

Standard Zoom | Canon EF

Change

Canon 17-40mm f4.0L USM

Wideangle Zoom | Canon EF

Reasons to choose Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF over Canon EF 17-40mm f4.0L USM

Reasons to choose Canon EF 17-40mm f4.0L USM over Tamron SP AF 17-50mm F2.8 XR Di II LD Aspherical IF

Max Magnification	0.24x vs 0.22x	better close-up

Tamron 17-50mm f2.8 XR II LD vs Canon 17-40mm f4.0L USM Specs Table

Detailed comparison of specifications

General	Tamron 17-50mm f2.8 XR II LD	Canon 17-40mm f4.0L USM
Brand	Tamron	Canon
Lens Type	Zoom	Zoom
Price	$299.00	$499.00
Lens Type	Standard Zoom	Wideangle Zoom
Lens Mount	Canon EF	Canon EF
Max Format	APS-C / DX	35mm FF
Focal Range	17-50mm	17-40mm
Image Stabilization	No	No
Colour	Black	Black
Zoom Method	Rotary (extending)	Rotary (internal)
Power Zoom	-	No
Zoom Lock	Yes	No
Zoom Ratio	2.9X	2.4X
Aperture
Max Aperture	F2.8	F4.0
Min Aperture	F32.0	F22.0
Aperture Ring	No	No
Diaphragm Blades	7	7
Optics
Optical Elements	16	12
Optical Groups	13	9
Special Elements	2 hybrid aspherical elements 1 LD (Low Dispersion) glass element 1 XR (Extra Refractive) element	Super Spectra coatings
Focusing
Min Focus Distance	0.27m	0.28m
Max Magnification	0.22X	0.24X
Autofocus	Yes	Yes
AF Motor Type	Micromotor	Ultrasonic
Full Time Manual		Yes
Focus Method	Internal	Internal
Distance Scale	Yes	Yes
DoF Scale	Yes	Yes
Distance Scale	Yes	Yes
Focus Distance Limiter	Unknown	Unknown
Physical Specs
Weight	430g	500g
Diameter	74mm	84mm
Length	82mm	97mm
Materials	Unknown	Metal barrel, metal mount
Weather Sealing	Unknown	Yes
Filter Thread	67mm	77mm
Filter Notes	-	-
Hood Supplied	Yes	Unknown
Hood Code	flower shaped hood	EW-83E
Tripod Collar	No	No
Optional Accessories	-	Soft Case LP1319
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