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AF micro-adjustment feature
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Post new topic   Reply to topic    conurus Forum Index -> Contax N to Canon EF Mount Conversion
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Do you find this feature useful?
No, the AF is accurate so I do not see a need for it.
7%
 7%  [ 2 ]
Yes! I have an AF accuracy issue so I need an adjustment like this.
59%
 59%  [ 16 ]
I don't have an AF accuracy issue, but would like to see this feature just in case I ever do.
33%
 33%  [ 9 ]
Total Votes : 27

Author Message
Barth



Joined: 22 Jun 2011
Posts: 22
Location: Dallas

PostPosted: Thu Sep 15, 2011 10:00 pm    Post subject: Reply with quote

I'm trying to update microfocus adjustment at close focus on this lens: 12720319

Step one says to set the camera at f/22, lens at f/8.

I presume that because the lens' max aperture is f/16, the camera (5d Mark II) will not allow a setting of f/22.

I've tried f/16, but I get no "blinks" or confirmed settings, and shots do not show adjustment.

Any advice?


UPDATE:

Never mind. I used the camera body to make the changes. Much easier.
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Timon



Joined: 15 Feb 2012
Posts: 45

PostPosted: Tue Mar 06, 2012 1:28 am    Post subject: AF adjustments in camera? Reply with quote

Hi Conurus, is this method to adjust the lens in the lens itself more effective than using the AF adjustments in my 5d Mark ii?
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conurus
Site Admin


Joined: 15 Aug 2006
Posts: 795
Location: Vancouver, Canada

PostPosted: Wed Mar 07, 2012 12:25 am    Post subject: Reply with quote

Storing the AF microadjustment in the lens instead of the camera has the following advantages

  • you may store different adjustments for different zoom positions (for a zoom lens).
  • you may store different adjustments for infinity and closest focusing distance.
  • you may store a larger value (e.g. +3Cool then is possible with the camera body's adjustment.


The disadvantage is that in-lens AF microadjustment is more difficult to use.

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I am a bird and I uncovered the E, EF and N-mount communication protocols!
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Timon



Joined: 15 Feb 2012
Posts: 45

PostPosted: Sat Mar 24, 2012 8:00 pm    Post subject: Reply with quote

Thanks. I have another question...I'm trying to adjust my NAM-1 adapter...if I set the adjustment to +20 and then to +5, does that adjust my lens to +25, or does the +5 override my +20 (and the adjustment is now just +5)?
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