We learned about the development of the EF 600mm f/4 DO IS way back  in September 2015 at the Canon EXPO in New York City.

We're being told that one or two additional DO lens is being developed alongside the EF 600mm f/4 DO IS and the plan is to announce them in late August 2018 ahead of Photokina 2018 in Cologne, Germany.

We're not sure how well the EF 70-300mm f/4.5-5.6 DO IS sold, but I haven't seen too many of them in peoples kits over the years. A replacement doesn't make too much sense to us. It definitely wasn't a bad lens, but I don't think it was good enough or small enough to justify a purchase once the space saving 70-300mm f/4-5.6L IS was announced.

As always, lenses can be hard to nail down as far as announcement time frames go, but we'll keep asking.

More to come….

image credit // popphoto

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