If I might chime in, re Full Time Manual focus.
I believe the reason manufacturers specify full time manual focusing using a term or acronym to identify it, is because the earliest auto-focus lenses could not be used to manual focus unless you turned auto-focus off completely. In an action oriented situation, this might be detrimental and cause you to lose a shot. (particularly in the early days when AF was not nearly as capable as it is today)
Higher cost later generations of some lenses allowed you to override auto focus using the manual focus ring at any time, without the need to switch from auto focus to manual on the lens. This was a feature that was almost instantly asked for with AF lenses, and a feature that is more complicated and expansive to implement than the type where you had to switch it off.
Today, FTM is the norm for most all Canon lenses, in fact has been for a long time. Very few EF lenses do not offer this feature, but in the grand scheme of things there are still plenty of lenses out there that don't. Back in the mid 2000s MOST 3rd party lenses did not. Even companies like SIGMA (who was the first 3rd party to master a USM autofocus motor alternative) only installed that AF motor in their highest end EX lenses. All others used slow noisy AF motors, and many could not be manually focused while Af was switched on at the lens. Other manufactures like Tamron, Kenko, Tokina, did not have a USM equivalent at all, and the vast majority if not all of their lenses needed to be switched "manual" to allow manual.
Personally Ive not had reason to look at low end 3rd party lenses in a long time, so I may not be up to date here, but it would not surprise me at all of many of the hyper-zooms and bargains still lack an FTM ability.
It's a feature I use all the time, and could easily understand that it would seem like a normal experience, especially for a Canon shooter who's lenses have included it for so long. But ti's a feature none the less, and therefore I sympathize with Choderboy that it is not just "manual focus". It is the ability to override auto focus using the manual focus ring at any time.


