The Canon EFM 550mm f/4563 IS STM ($) is one of the smaller telezooms available for APSC mirrorless systems It balances well on the compact EOS M3 camera, and is also quite light It's not the bestperforming zoom we've ever seen, and its narrow aperture requires you to push the ISO in dim lightThe key advantage of the EOS M system is its light weight and high speed Unlike fullframe cameras and the lenses that go with them, these cameras and optics are designed to be speedy and convenient For instance, say you were to combine the Canon EFM 1545mm, 550mm and 1122mm lensesBuy Canon EFM 550mm f/4563 IS STM Lens (Black) featuring EFM Mount Lens/APSC Format, 0mm (35mm Equivalent), Aperture Range f/45 to f/32, One UD Element & One Aspherical Element, STM Stepping AF Motor, FullTime Manual Focus Override, Optical Image Stabilizer, Rounded 7Blade Diaphragm Review Canon null Canon Ef M 55 0mm F 4 5 6 3 Is Stm Canon Rumors Your Best Source For Canon Rumors Leaks And Gossip Canon ef-m ...