Tamron Tele Converter 1.4x Canon

Tele converter offering 1.4x magnification for SP 150-600mm G2 and SP 70-200mm G2, providing a maximum zoom range up to 840mm. Available focusing mode when used with SP 150-600mm F/5-6.3 Di VC USD G2 *1 Autofocus functions normally on any camera that offers F/8 autofocusing (see your camera's instruction manual for your camera's ability). *2 Subjects with low contrast and/or luminosity values can sometimes result in out-of-focus images. Available focusing mode when used with SP 70-200mm F/2.8 Di VC USD G2 (Model A025) *2. For more detailed information about tele converters, please refer to the Tamron website. *3. Subjects with low contrast and/or luminosity values can sometimes result in out-of-focus images. In the end it depends on the visible contrast for the AF-metering system in the camera. Simply saying on camera, subject, and lighting conditions.