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[OM] Focusing accuracy with EMF adapters

Subject: [OM] Focusing accuracy with EMF adapters
From: usher99@xxxxxxx
Date: Mon, 6 Feb 2012 17:55:45 -0500 (EST)
IFM writes:
>If you use it on cameras with micro focus adjustment, which the 5D 
isn't, the
>adapter may be set to micro adjust focus
>based on testing. I don't have a camera with that feature as yet, 
though, so I
>haven't used it.

Hmm, the microfocus adjust (MA) chips predated use with MA feature in a 
cam  body.  The adjustments can be combined,
but I know of no reason the chip can't be programmed on 5D classic.  
Starting from the same direction (I use infinity) and working 
s-l-o-w-l-y
towards focus point  may improve consistency.  Magnified LV has been 
definitively shown to beat any AF.  On the CV 180/4 the focus confirm 
is usually close enough but that is more forgiving given the larger 
dof.  MA for zooms is generally a fool's errand.

 MA Mike


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