Canon EOS R6 V Specs: Active Cooling and more…

STM can be quick, but it is not fast. It's also a mechanical gear-driven focusing system that will fail with time. It will last the warranty period, so what does Canon care? Might even last until replacement parts are no longer available. Oh no, you have to buy a new lens. I'm sure Canon will be most distressed.

So you've never used them. Got it.

The only company that will officially service lenses forever is Leica (I don't know about cinema lenses from the likes of panavision).

Canon serviced the EF 50 1.4 for like 30 years (and probably another 5+). They still service a bunch of other lenses released 20+ years ago. Just to let you know, USM motors fail too. Anything that moves will eventually fail.
 
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I would certainly hope so, but Canon has put STM AF into really expensive lenses such as the $2400 RF10-20/4L or the $1900 RF7-14L. I won't be surprised if they put STM AF & PZ into this $1400 lens.
I own and use the RF 10-20 mm f4 lens and the focusing performance is excellent. At those focal lengths three is very little movement in lens elements so STM makes a lot of sense.
 
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So they are going to price it ~$100 above the Sony 16-35/4G PZ, a lens with six XD Linear motors in it, four for AF and two more for zooming. Canon better have upped their game as far as their PZ system goes, the PZ lenses released to date have been...underwhelming.

And ~$200 more than the 20-70/4G. This one lacks PZ but has more range. Great travel lens, pairs well with the 70-200/4G II Macro (0.5x through the full zoom range).
Perhaps Sony is paying you to troll here, but I hope not – your trite, repetitive postings mean they’d be wasting their money. Sad that you apparently have no better use for your time than trolling this forum.
 
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