This Is What $13K Luxury Really Looks Like: Canon RF 600mm F4 Review

Super telephoto lenses have been sluggish to arrive in mirrorless mounts. Yet, Canon already has more long lenses than the older Sony E Mount. That's in part because lenses like the Canon RF 600mm f4 L IS USM adapt the same optical design as the similar DSLR lens. Telling the new RF 600mm apart from the EF version would be difficult to do at first glance. But, with closer inspection, the RF lens has a band of silver at the mount -- and is actually a little longer and slightly heavier. But, with ...