Question: sigma is lenses for canon?
Answer: Sigma 583306 17-50mm f2.8 EX DC HSM Optical Stabilized lens for Canon Digital SLR Cameras with APS-C Sensors. ... 
Sigma 150-600 mm F5-6.3 DG OS HSM Contemporary Canon Mount Lens. ... 
Sigma 105mm f/2.8 EX DG OS HSM Macro Lens Canon DSLR Cameras. ... 
Sigma 17-70mm f/2.8-4 DC OS HSM for Canon.