Tamron's ultra-wide for Canon APS-C — the SP 10-24mm Di II for EF-S mount.
The Tamron SP AF 10-24mm f/3.5-4.5 Di II LD ASP IF for Canon EF is the Canon mount version of the Tamron ultra-wide described in Nikon F (ID 3657) and Sony A (ID 3484). Covering 16-38mm equivalent on Canon APS-C. SP build quality. LD and aspherical elements. IF internal focusing. A budget ultra-wide for Canon DX DSLRs.
Same optical quality as other mount versions. Decent centre sharpness. SP build quality above basic. LD and aspherical elements control aberrations. IF prevents front rotation — useful for polarisers. Variable aperture. No stabilisation. The Canon EF-S mount provides compatibility with Canon's APS-C DSLR and mirrorless bodies via adapter.
Canon EF mount, APS-C. Filter thread 77mm. Weight approximately 406 grams. SP build quality. IF design. Same optical formula across all mount versions. No stabilisation. The VC HLD successor adds stabilisation. The Canon mount provides broad body compatibility across Canon's DSLR range.
Affordable. Same quality as other mount versions. Check zoom and AF. The VC HLD version is preferred for stabilisation. A serviceable budget ultra-wide for Canon APS-C. The 77mm filter enables standard filters at ultra-wide. Better than most budget alternatives. SP build adds durability.