Yes. In TV lenses, it’s very common to have “point” focal lengths. A few Canon examples: CJ15ex8.5B, KJ10ex4.5B, CJ15ex4.3B, CJ25ex7.6B. The first number is the zoom ratio and the second is the back-end(wide) focal length. So the Canon 10x4.5 is a 4.5mm-45mm zoom lens.
These are the same lens as the previously announced Flex Zoom 20-50mm T2.4 and 45-135mm T2.4, but with a new relay that allows then to be faster whilst losing coverage in full frame (hence why they're called "flex zooms", you can ask Canon support to swap the relay in order to make then faster at Super 35 or full frame at lost of a stop in speed). Hence why the weird focal lens length: 14-35mm T1.7 = 20-50mm T2.4 & 31.5-95mm T1.7 = 45-135mm T2.4.
The redesign in 2018 dramatically reduced weight in the 400 and 600.
Given the timing and features that Canon says are RF only, like in-lens profiles, I suspect the RF versions aren’t “EF with adapter”, but the EF versions are rather “RF without adapter”.
Potaaayto, potahhhto. The MkII versions of the 300/400/500/600 came out over a decade ago. The 400 and 600 got MkIII versions, the 300 and 500 did not.
Agreed that may be the case, although we are looking at the last revamp of the 500 was 2011. Hoping it comes soon enough.Given the timing and features that Canon says are RF only, like in-lens profiles, I suspect the RF versions aren’t “EF with adapter”, but the EF versions are rather “RF without adapter”.
The ‘delay’ between the releases was likely to extract maximum cash from the target audience
Given the timing and features that Canon says are RF only, like in-lens profiles, I suspect the RF versions aren’t “EF with adapter”, but the EF versions are rather “RF without adapter”.
The ‘delay’ between the releases was likely to extract maximum cash from the target audience
Yep. The problem with RF lenses, you can only use them on RF cameras, because of the shallow flange depth/back focus distance. Whereas EF is like PL, and is pretty deep, so you can easily adapt them to other cameras/mounts, because there is plenty of space for an adapter. And the cine and TV camera market is waaaay different than the still camera market. Luckily Canon, being in the TV lens market for decades and decades, knows this. Heck, even Arri makes EF mounts for their cameras. I have one for my Amira.
Basically, all New Canon cinema lenses are convertible between PL and EF.
