- Jan 22, 2012
You joking right? Yeah joking...I would buy the EF version any day over the RF version and that's both f/4 and f/2.8 lenses. If I buy the R5 I'll be keeping all my EF glass as there's basically no RF glass I care for at this stage. Maybe if and when they release new lightweight 300 f/2.8 and 500 f/4 I migth swap my EF versions, or release that 100 f/2 macro I'l sell the old 100L.