Canon's professional 300mm f/2.8 Mark II — improved IS and optics with fluorite elements.
The Canon EF 300mm f/2.8L IS II USM launched in 2010 as a major update to Canon's professional 300mm prime, reducing weight by 810g while improving IS to Mode 3 and adding fluorite elements for outstanding optical quality.
Optically outstanding — fluorite and UD elements deliver exceptional sharpness. IS II provides 4 stops with new Mode 3 for panning. Ring USM for instantaneous AF. The weight reduction from Mark I was dramatic — 810g lighter.
Canon EF mount with 52mm drop-in filter holder. Approximately 2350g — dramatically lighter than Mark I at 3160g. Full L-series weather sealing. 1.4x and 2x extender compatible. Fluorine coating. Minimum focus distance 200cm.
Available used at professional to luxury prices. The Mark II's weight reduction was transformative — more practical handheld. The RF 300mm lenses are the mirrorless successors. For Canon EF professional sports and wildlife photographers.