Tamron AF Di LD SP FEC (IF) Lens for Canon Digital SLR Cameras (Model Canon SLR AF mount; telephoto zoom lensInternal focusing and low to 500 mm focal maximum apertureDigitally integrated design, & Camera,
Most of the times it is much cheaper to get lenses for a Canon camera from a third party vendor such as Tamron. Their lenses are quite reliable and just as good as the ones offered by Canon. Being more affordable means that even beginners will get the opportunity to shoot professional grade...
The Tamron Di III VC Lens for Sony E Mount Cameras (Black) made for the Sony E mount camera system incorporates a stepping motor that is optimal for the contrast-detection AF system of Sony mirrorless interchangeable-lens cameras
Tamron Zoom Super Wide Angle SP AF XR Di II LD Aspherical [IF] Autofocus Lens for Canon EOS Digital Cameras. Great step-up lens from kit lens. Downsides: AF is noisy, the focus ring is rather stiff & focus ring turns while focusing.