**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links.
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
Check current pricing from these affiliates
Tamron 17-35mm F/2.8-4 Di OSD Pricing*
- Tamron 17-35mm F/2.8-4 Di OSD - $599
Check current pricing from these affiliates
*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)
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 |