There have been a lot of patents and talk about new “big white” lenses from Canon, from the RF 200-500mm f/4L 1.4x to the RF 500mm f/4L IS USM. There is also the possibility of more lenses from the design team of the RF 600mm f/11 and RF 800mm f/11. Canon has admitted to more lenses like those coming in the future.
For now, we have been told that a “popular” super telephoto lens will get an RF mount and a completely new design. Unfortunately the source didn't divulge the exact lens that we can expect to see announced in the next month or two.
If we had to guess, both the EF 200-400mm f/4L IS 1.4x and the EF 500mm f/4L IS USM II need RF equivalents.
More to come…
That's overdue too. I loved my EF 300/2.8L II, and although I couldn't go back to it because I need longer, I really miss it.
Edit: if a 500/5.6 would be such a ‘hot seller’, why wasn’t there one for EF? Perhaps Canon knows something you don’t? I’m not sure why people persist in the belief that because they personally want something hordes of other buyers must want it, too.
Switching between the RF100-500L and EF180L makes me appreciate just how nice dual nano USM is, it feels like the body is holding back the lens, the EF180L is very clearly holding back the body.
That would be an awesome lens and perfect for butterflying and herping(granted it wont be useful in cloud forests/monsoon/foggy weather).
At this point in time the only big whites that come to mind that haven’t made the transition to RF are the 300mm f/2.8, 500mm f/4, and 200-400. The 200-400 seems to me like it’s next on the list. That lens dominated sidelines at sporting events - especially American Football - and is long overdue for a new optical formula that can hopefully bring its size and weight down.
Also, I believe the 300mm f/2.8 will be the first RF prime with a built-in TC. At the cost of it not being compatible with any TC at the back. This would be a total Canon move, unfortunately. The EF 300mm f/2.8L IS II USM works incredibly well as a 600mm f/5.6 - it’s not even funny. I believe this ability will be lost while Canon boasts about the size/weight refinement of the new RF 300 f/2.8.
The topic of the 200-500 1.4xTC rumor is interesting. I know me well enough that I'd be at 700mm the whole time with that, so if it added a lot of weight to get the zoom range, I'm not sure I'd bite. I'm sure the price differential between my 100-500 and this new lens would be around 10k, which I wouldn't be able to justify as a swap.
The EF 200mm F1.8 (or F2) sounds very interesting. Given a decent price point (which will probably never happen) an RF version would/ could tempt me. Since the EF design is very old (I guess, not doing any research here) a new optical formula might make it a stellar lense.
With extenders you'd get:
200mm F2 - 280mm F2.8 - 400mm F4
I'd be willing to give up my 70-200 and 100-500mm for this, but they probably would not generate enough money to buy it.
That might worth ones money.