06-07-2012, 12:20 PM
[quote name='Brightcolours' timestamp='1339064316' post='18737']
The STM motor may be s sign that Canon has developed a hybrid AF system. Meaning, the new 650D may sport fast contrast AF, and the new version has a motor and electronics that can handle fast contrast AF and phase detect AF. Olympus is not using USM motors for the very same reason... They are not the right type of motor to implement fast contrast AF with.
As for Canon doing the "Pentax thing", that is not going to happen. Canon is said to work on a mirrorless system with its own lenses, AND with full EF compatibility. That then means a compact camera without mirror box, but with an EF adapter that allows AF/IS/aperture control.
[/quote]
As far as I know, USM seems to be very fast, faster than micromotors. Why would it not be fast enough for contrast detect, what else would be faster than USM?
The STM motor may be s sign that Canon has developed a hybrid AF system. Meaning, the new 650D may sport fast contrast AF, and the new version has a motor and electronics that can handle fast contrast AF and phase detect AF. Olympus is not using USM motors for the very same reason... They are not the right type of motor to implement fast contrast AF with.
As for Canon doing the "Pentax thing", that is not going to happen. Canon is said to work on a mirrorless system with its own lenses, AND with full EF compatibility. That then means a compact camera without mirror box, but with an EF adapter that allows AF/IS/aperture control.
[/quote]
As far as I know, USM seems to be very fast, faster than micromotors. Why would it not be fast enough for contrast detect, what else would be faster than USM?