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Forums > Back > phase- vs contrast-detection AF
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#18
05-13-2011, 06:08 PM
[quote name='Klaus' timestamp='1305294750' post='8292']

I don't know whether the G does that but technically it can close the aperture and focus thereafter. It just need to perform an contrast analysis of sensor data. The effective aperture should be rather irrelevant here (within limits depending on the light level).

[/quote]



I know for sure Sony Nex always close/open the aperture real time when you change the aperture. That's why they don't need DOF preview button too.
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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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