Is STM better than USM?

Started Jun 8, 2012 | Discussions thread
moklo New Member • Posts: 2
Re: Is STM better than USM?

Too bad, many people looked down on STM just because they are on the cheap kit lenses and not on the Professional L series.

Try to acquire one and conduct a test STM vs USM. And they will surprise you.

To the "L" series fanatics out there, don't lose hope, there is something bigger than STM

coming your way. USM patent is expiring soon, it's just a matter of time before Yongnou

can come up with a USM like focus, just like micro motor primes.

This video can answer your question.. STM vs USM(Ring USM) vs Micro Motor

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