About the Nano USM AF from Canon

[Lauvau]

Hi evryone,

 

Today come out two Canon RF lenses : the 16-35 and 24-70

These glasses look good, tests should arrive on the internet by the hundreds ... they have AF Nano USM technology.

 

However, I read a few times, there were several people who were skeptical about the Nano USM technology compared to the old USM technology (this one is on the RF 50, 85 and 28-70), for example I have read: "It's good for the speed and precision of the AF... but it's a disaster in case of failure where the objective becomes INOPERABLE .... or IRREPARABLE when this zoom will be discontinued. We would not say anything about the risk of haircuts that this type of lenses could know. "

 

What do you think about that ? Is Nano USM hard to fixe ? Is this a little crazy?

All comment will be appreciated.