Canon EF 24-70mm f/2.8L USM vs Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical (IF) Macro

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

Canon

EF 24-70mm f/2.8L USM

Tamron

SP AF 28-75mm f/2.8 XR Di LD Aspherical (IF) Macro

Verdict at a glance

Canon EF 24-70mm f/2.8L USM is faster by 0.4 stops (f/24.0 vs f/28.0), letting in more light.
Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical (IF) Macro is lighter by 440g.
Canon EF 24-70mm f/2.8L USM goes wider (24mm vs 28mm).
Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical (IF) Macro reaches further (75mm vs 70mm).

Specification comparison
Spec	EF 24-70mm f/2.8L USM	SP AF 28-75mm f/2.8 XR Di LD Aspherical (IF) Macro
Brand	Canon	Tamron
Mount	Canon EF	Canon EF
Type	Zoom	Macro
Focal length	24-70mm (wider)	28-75mm
Max aperture	f/24.0 (faster)	f/28.0
Released	2002	n/a
Blades	8	n/a
Format	full-frame	n/a
Groups	13	n/a
Af motor	USM	n/a
Elements	16	n/a
Weight g	950.0	510 (lighter)
Filter mm	77	n/a
Length mm	123.5	92.0
Diameter mm	83.2	n/a
Min focus m	0.38	0.33 (closer focusing)
Max magnification	0.29	n/a

Canon EF 24-70mm f/2.8L USM

The 2002 original 24-70mm f/2.8L, a bulky standard zoom whose front barrel extends as you zoom. It was replaced by the Mark II in 2012.

Pros

Constant f/2.8 aperture
Sealed L-series construction
Fast USM focus
Takes 77mm filters

Cons

Heavy at around 950g
Barrel extends when zooming
Softer corners than the Mark II

Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical (IF) Macro

A compact f/2.8 standard zoom for full-frame DSLRs, weighing about 510 g. It has a minimum focus distance of 0.33 m and was widely used as an alternative to brand-name lenses.

Pros

Constant f/2.8
Light at about 510 g
Close focus 0.33 m
Full-frame coverage

Cons

Autofocus is slower and louder than newer motors
No stabilization
Older optical design

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