True. But by the end of the day, you still have a 100-500 F7.1 for the great price of....3.300€ This is the aprox. price in EUR with my country taxes. I know some of you dont share my opinion, but I consider this a really High price for a zoom lens with a high aperture of F7.1A 200-600 is a three times zoom (600/200=3), pretty close to the simplest type of zoom range eg 24-70, 70-200. A 100-500 is a five times zoom (500/100=5), five times zooms are MUCH more difficult and expensive to build to the same standard.
Also, of course some of you do make a big value of the 100-200 reach, but for me and possibly for most of the shooters that are looking for a telephoto the reach is everything we really need! So it would be so much better if Canon had made a 200-500 F5.6 or close to this! Nikon has it and it´s a great lens!
I do value the reducing weight and size, but that is not everything....For a L lens and like someone mentioned some posts behind,I think Canon can´t canibalize important things like aperture just to bring down size and weight. Don´t get me wrong, it´s a great thing, but...what matters most for a professional is if at the end of the day you can get a shot with the highest quality you can...F7.1 it´s not the end of the world....But it´ starting to be... Unless the new R bodies are insane at ISO levels...
I dont want to be unfair with Canon, I do value the new lens and the new ways of bringing lenses to the market with less weight and size...But boy...3300€... For me, the right price is around 2600€/2700€ for this type of lens.
And don´t come with the thing that we dont know the aperture at 400mm. If I buy a 500mm is to use at 500 with quality!!