- Dec 3, 2017
I wonder why the RF 100-400 when there is the 100-500. I read somewhere the RF 100-500 stays at f/5.6 until 400mm. I am not sure if that is true but if it is true why another RF 100-400. If the reports of RF 100-400 is going to be true that is another area Canon missed out IMO. They could have made a 100-400 and then a 200-600.
100-500 is L glass. 100-400 is not. Price.