01-06-2012, 10:54 AM
(This post was last modified: 01-06-2012, 11:04 AM by Brightcolours.)
[quote name='mst' timestamp='1325845432' post='14381']
Well, the 1D series has always provided AF up to f/8 on the central AF sensor (but only this one). Widening the AF field shouldn't have any influence on this feature.
With the D4 specs out now, Canon may reconsider that feature (if still possible).
-- Markus
[/quote]
It does influence it, depending on where the actual sensors are located. That is the thing... the sensors themselves are not right "under" the locations of the AF points you see in the view finder.
It is anyway more about reliability than being able to, to enable f8 or not. So maybe the decision not to "include" f8 is about the new performance of the new AF logic, and f8 would make it less reliable in comparison to f4 and f5.6.
The AF sensor grew considerably, from 15 to 19mm wide.
You can anyway get f8 to AF by taping one pin. But with the reliability not guaranteed by Canon.
Well, the 1D series has always provided AF up to f/8 on the central AF sensor (but only this one). Widening the AF field shouldn't have any influence on this feature.
With the D4 specs out now, Canon may reconsider that feature (if still possible).
-- Markus
[/quote]
It does influence it, depending on where the actual sensors are located. That is the thing... the sensors themselves are not right "under" the locations of the AF points you see in the view finder.
It is anyway more about reliability than being able to, to enable f8 or not. So maybe the decision not to "include" f8 is about the new performance of the new AF logic, and f8 would make it less reliable in comparison to f4 and f5.6.
The AF sensor grew considerably, from 15 to 19mm wide.
You can anyway get f8 to AF by taping one pin. But with the reliability not guaranteed by Canon.