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Topics - jeffabbyben

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Lenses / Is this the normal bokeh for an L series lens
« on: November 30, 2012, 09:52:00 PM »
Just got my Canon 35L 1.4 and was surprised to see all this "onion skin" in the bokeh.  I have tried a quick web search but can't find out what causes this.  Is this amount of onion skin normal for a 35 mm L lens?  Will all lenses do this wide open.  This is from the central area of the image.  Thanks.

EOS Bodies - For Stills / 5D Mark iii Autofocus question
« on: May 26, 2012, 12:48:48 PM »
I have read the manual and I am not understanding how the accel/decel tracking and the Autofocus point auto switching work differently.  It seems like to improve the accel/decel tracking it could only be done by increasing the sensitivity of the autofocus points (which is a different parameter).  I went to a track meet and tried to image some pole vaulting and had mixed success with different settings.  Can someone explain how the accel/decel tracking actually works differerent from the autofocus switching 

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