The canon ef 75 300mm f4 56 iii lens is a lightweight compact 4x telephoto zoom lens that is ideal for portraiture sports and wildlife photography this lens has the same optical system construction and exterior design as the ef 75 300mm f4 56 iii usm lens however instead of having a usm ultrasonic motor it has a micro motor the integrated af autofocus motor provides quick autofocusing performance and the super spectra coating featured on the lens ensures accurate colour balance wi