Canon EF 600MM F/4 DO to Arrive Late 2017?
Canon has been really pushing diffractive optic technology, currently offering EF format shooters both the EF 400mm f/4 DO IS II USM and the EF 70-300mm f/4.5-5.6 DO IS USM and even patenting a huge 1000mm DO lens! Probably the most highly anticipated unit however is the EF 600MM F/4 DO, a compact super-telephoto at a really useful focal length for both sports and wildlife shooters. The lens has already been patented, and the latest news about the unit suggests that it will arrive in late 2017. A prototype of the unit was shown Canon EXPO in September of 2015 but little else has been heard since.
Mr. white is desperate to get his hands on one of these, he already has the 400mm so the 600mm would round out the current collection nicely!