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Forums > Back > phase- vs contrast-detection AF
#16
[quote name='Klaus' timestamp='1305278671' post='8286']

As far as PD AF is concerned you can simply try it yourself. Choose manual focusing, then check the focus -range- where the in-focus indicator is active. At the end of the day this is also the range which is considered to be Ok by the PD AF. It is the same focus check mechanism after all.

[/quote]



I see, but, what if the subject is moving towards / away from the camera... Would we have the same curves?



Quote:PD AF is also performed at max. aperture so it is vulnerable to focus shifts when stopping down (residual spherical aberration).



I don't get it Klaus... Does G3 performs AF right after closing the aperture? Because the less amount of light gathering would not help with CD AF either, isn't that right?





Serkan
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Messages In This Thread
phase- vs contrast-detection AF - by Klaus - 05-12-2011, 11:11 AM
phase- vs contrast-detection AF - by popo - 05-12-2011, 11:48 AM
phase- vs contrast-detection AF - by Klaus - 05-12-2011, 12:16 PM
phase- vs contrast-detection AF - by Guest - 05-12-2011, 02:02 PM
phase- vs contrast-detection AF - by Klaus - 05-12-2011, 02:37 PM
phase- vs contrast-detection AF - by popo - 05-12-2011, 04:38 PM
phase- vs contrast-detection AF - by Klaus - 05-12-2011, 05:00 PM
phase- vs contrast-detection AF - by Sylvain - 05-12-2011, 09:30 PM
phase- vs contrast-detection AF - by popo - 05-12-2011, 10:21 PM
phase- vs contrast-detection AF - by Guest - 05-13-2011, 06:09 AM
phase- vs contrast-detection AF - by PuxaVida - 05-13-2011, 06:58 AM
phase- vs contrast-detection AF - by Klaus - 05-13-2011, 09:24 AM
phase- vs contrast-detection AF - by popo - 05-13-2011, 11:28 AM
phase- vs contrast-detection AF - by PuxaVida - 05-13-2011, 01:00 PM
phase- vs contrast-detection AF - by Klaus - 05-13-2011, 01:52 PM
phase- vs contrast-detection AF - by Guest - 05-13-2011, 06:08 PM
phase- vs contrast-detection AF - by PuxaVida - 05-14-2011, 09:37 AM
phase- vs contrast-detection AF - by Guest - 05-14-2011, 09:49 AM
phase- vs contrast-detection AF - by PuxaVida - 05-15-2011, 11:38 AM

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