06-09-2012, 10:21 AM
[quote name='popo' timestamp='1339158155' post='18774']
Quickly skimming through the dpreview preview, I note the phase part of the hybrid AF is only effective in the centre region with a coverage area smaller than the 9 point diamond. Of course still an improvement over what was there previously, but it is no mirror killer (yet).
Also they say the STM lenses are focus-by-wire. Let's just say I'm not a fan of that...
[/quote]
I do not think the (yet) part will go away. Same reason for PD AF coverage to be limited goes for the hybrid AF PD part... Only now it is not limited by the size of the mount/mirror box (remember that coverage in FF frames is smaller than in APS-C frames, because APS_C has FF sized mirror box), but limited also by the smaller size of the sensor.
Essentially, we see the same coverage as with PD AF, but with an 1.6x crop factor.
Quickly skimming through the dpreview preview, I note the phase part of the hybrid AF is only effective in the centre region with a coverage area smaller than the 9 point diamond. Of course still an improvement over what was there previously, but it is no mirror killer (yet).
Also they say the STM lenses are focus-by-wire. Let's just say I'm not a fan of that...
[/quote]
I do not think the (yet) part will go away. Same reason for PD AF coverage to be limited goes for the hybrid AF PD part... Only now it is not limited by the size of the mount/mirror box (remember that coverage in FF frames is smaller than in APS-C frames, because APS_C has FF sized mirror box), but limited also by the smaller size of the sensor.
Essentially, we see the same coverage as with PD AF, but with an 1.6x crop factor.