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Canon EF 17-40mm f/4L USM vs Tamron 17-35mm F/2.8-4 Di OSD Lens Comparison

Canon EF 17-40mm f/4L USM Pricing*

  • Canon EF 17-40mm f/4L USM - $799.99

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Tamron 17-35mm F/2.8-4 Di OSD Pricing*

  • Tamron 17-35mm F/2.8-4 Di OSD - $599

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*Pricing from Manufacturer's website - Current selling price may be different. Be sure to visit the links below for current pricing.

Canon EF 17-40mm f/4L USM Advantages

Canon Reputation
Constant f/4 aperture

Tamron 17-35mm F/2.8-4 Di OSD Advantages

Price
Faster Aperture at wider settings

Conclusion

This will be updated once the Tamron has been formally tested.

Canon EF 17-40mm f/4L USM Overall User Rating

4.65 out of 5

based on 1654 user reviews online.

: 73% (1211)
: 22% (372)
: 2% (36)
: 1% (15)
: 1% (12)

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Specs

Spec Canon EF 17-40mm f/4L USM Tamron 17-35mm F/2.8-4 Di OSD
Focal Length 17 17
Max Aperture f/4 f/2.8-4.0
Minimum Aperture f/22 f/
Minimum Focus distance 11.02 inches 11.02 inches
Maximum Magnification 0.24x 0.2x
Number of Elements 12 15
Number of Groups 9 10
Aperture Blade Design Rounded Not Specified
Number of Aperture Blades 7 7
Filter Size 77 mm 77 mm
Diameter 3.26 in. 3.31 in.
Length 3.81 in. 3.66 in.
Weight 1.05 lbs. 1.01 lbs.
Lens Mount Construction Metal Metal
Tripod Collar None None
Weather Sealed Yes Yes
Distance Scale Yes - No Hyper Focal Markings No
Image Stabilization No No
Lens Shade Included Included