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Coming to USM Lenses?
This is from the Jusa Nature Photography forum:
“Speaking to my friend from Canon UK today, who let me in on something potentially rather interesting. The newly released Canon SX1 bridge camera uses a new type of internal AF, called VCM instead of Canon's tried and tested USM system. Don't ask me what VCM stands for, I wasn't paying too much attention to the abbreviation and have forgot what it means! The long and the short of it is that this new AF system should start making it's way into lenses in the next 6 months. He wouldn't let on how it works, but it's meant to be faster and quieter than the standard USM system. Don't know about the rest of you, but i've never found the USM lenses to be too slow or too noisey!!”
It's in the new SX 1 IS. Will they put it in new USM lenses? Once I know for sure what it is, I might have a better answer. For now, I'll say this is a point & shoot thing.