Buy from Amazon.com : http://fave.co/1Cs0gMy <br /><br />Sigma 170-500mm f/5-6.3 DG RF APO Aspherical Ultra Telephoto Zoom Lens for Canon SLR Cameras<br /><br />Product Description : <br />Optimized for digital SLR cameras <br />Multi-layer lens coating and lens design reduces flare and ghosting <br />Features one aspherical lens and three SLD Special Low Dispersion glass elements <br />Zoom hood is supplied <br />Minimum Aperture F32
