Vivitar 500mm lens on Amazon.com
Does this lens work with an EOS Rebel T5? http://www.amazon.com/Vivitar-Telephoto-Teleconverter-Digital-Cameras/dp/B00UG4MJ54/ref=sr_1_15/180-2777046-4029003?s=electronics&ie=UTF8&qid=1452412542&sr=1-15&keywords=canon+compatible+lenses