Canon EF 24-70mm f/2.8L USM vs Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF)

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

AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF)

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.
Canon EF 24-70mm f/2.8L USM goes wider (24mm vs 28mm).
Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) reaches further (300mm vs 70mm).

Specification comparison
Spec	EF 24-70mm f/2.8L USM	AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF)
Brand	Canon	Tamron
Mount	Canon EF	Canon EF
Type	Zoom	Superzoom
Focal length	24-70mm (wider)	28-300mm
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	n/a
Filter mm	77	n/a
Length mm	123.5	n/a
Diameter mm	83.2	n/a
Min focus m	0.38	n/a
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 AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF)

Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF): a full-frame superzoom lens with a 28-300mm focal length and a maximum aperture of f/3.5-6.3, made for Canon EF mount cameras, with aspherical elements. A high-ratio travel zoom covering wide-angle to telephoto in one lens.

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