Here we have Canon’s new, updated version of their moderately priced 70-300mm full frame lens. It offers improved AF, improved optical quality and a new electronic display. We coupled this to the Canon EOS 5DS Rbody, so let’s see how the lens performs and handles.

Handling and Features

70-300mm is a very useful telephoto range, versatile, fairly compact and offering an excellent balance between performance and cost. The step up to 400mm would add a fair amount of cost as well as increasing the size of a lens significantly. The Canon 70-300mm f/4-5.6 IS II USM lens is not the smallest such optic, but balances well on the Canon EOS 5DS R camera body and weighs in at a reasonable 710g.
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https://www.ephotozine.com/article/canon-ef-70-300mm-f-4-5-6-is-ii-usm-review-31038