EOS-M camera
This is something that seems to have appeared recently on the Canon site. What does STM lens refer to?
http://www.usa.canon.com/cusa/consumer/products/cameras/slr_cameras/eos_m_ef_m_22mm_stm_kit#Overview
http://www.usa.canon.com/cusa/consumer/products/cameras/slr_cameras/eos_m_ef_m_22mm_stm_kit#Overview
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Since it's possible to know the absolute focus position from this type of motor drive technology, I suspect that soon we will see dSLR bodies capable of automated accurate and repeatable rack focus and follow focus in video applications.
As it is, stepper motors should provide similar performance to the USM motors currently used in Canon's better and best lenses.
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