Sigma has done more for enthusiast APS-C than Nikon, Canon and Sony combined: Digital Photography Review
Sigma 8-16mm f/4.5-5.6 DC HSM FLD AF Ultra Wide Zoom Lens for APS-C Sized Canon Digital DSLR Camera : SIGMA: Amazon.ca: Electronics
DC Lens(optimized for APS-C format cameras) – Sigma
Sigma 30mm f/1.4 DC HSM Art Lens for Canon EF 301-101 B&H Photo
Sigma 18-35mm F1.8 DC HSM | Art — SIGMA Canada
Products :: LENSES & ACCESSORIES :: Sigma Lenses :: Sigma Mirrorless Mount :: SIGMA 56mm f/1.4 DC DN | C (CANON)
HELP: aps-c sensor (canon 77D) Best lens? 1) canon 17-55 f/2.8. 2) sigma 18-35 f-1.8. 3) sigma 17-50 f/2.8. 4) your choice in this range of zoom. Use for edc/ wedding/ portrait : r/canon