Our 2x Teleconverter for Canon cameras allows you to double the focal length of your Canon lenses! Turn a 300mm zoom lens into a 600mm lens, great for nature photography! Head over to our Fotodiox Youtube channel to learn more. - #2xTeleconverter #teleconverter #autoteleconverter #Fotodiox #FotodioxPro #doubler #doublerforCanon #teleconverterforcanon #photography #2xTeleconverterforCanon #CanonRebel #longlens #CanonEF70to300mm #LakeMichigan #zoomlens