Expand the versatility of your SP 150-600 mm DI VC USD G2 Canon EF mount lens and increase the focal length by a factor of up to 1.4x by using the Tamron 1.4x Teleconverter. It features a BBAR (Broad-Band Anti-Reflection) coating, which minimizes ghosting and flare. The ergonomic design of this teleconverter makes it easy to use for every photographer. This teleconverter comes with a durable construction that makes it resistant to dust and moisture. You can cover the teleconverter with the lens caps and store it in the carry case included.