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AF micro-adjustment feature
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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
MomoInu



Joined: 15 Aug 2006
Posts: 68
Location: Santa Fe, NM

PostPosted: Fri Dec 04, 2009 3:04 pm    Post subject: Reply with quote

Can anybody help me out and explain how this is done? Please?


MomoInu wrote:
OK. I'm just clueless. After sitting on my converted N85 for a few months, I decided I should try to do the micro-adjust feature with my 5D -- I am assuming that it works with the 5D, right?

After going through steps 1-7, I don't get any blinking of the "ONE SHOT" or "AI SERVO" indicator. So, I assume that no previous value has been set.

Step 8 says, "Set the desired adjustment value according to the following table...". OK, how, physically, do you set the value? Nothing is immediately obvious on the camera. What am I missing? What should I be seeing at this point? Further, do I enter all of the values in the chart (provided I can find out/figure out how to do that) or just one of them?

I guess I just need a little more clarification. Sorry for being such a stunad.
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MomoInu



Joined: 15 Aug 2006
Posts: 68
Location: Santa Fe, NM

PostPosted: Fri Dec 18, 2009 2:04 pm    Post subject: Reply with quote

Anybody? Does anybody read these forums anymore? Bo-Ming can you help here?


MomoInu wrote:
Can anybody help me out and explain how this is done? Please?


MomoInu wrote:
OK. I'm just clueless. After sitting on my converted N85 for a few months, I decided I should try to do the micro-adjust feature with my 5D -- I am assuming that it works with the 5D, right?

After going through steps 1-7, I don't get any blinking of the "ONE SHOT" or "AI SERVO" indicator. So, I assume that no previous value has been set.

Step 8 says, "Set the desired adjustment value according to the following table...". OK, how, physically, do you set the value? Nothing is immediately obvious on the camera. What am I missing? What should I be seeing at this point? Further, do I enter all of the values in the chart (provided I can find out/figure out how to do that) or just one of them?

I guess I just need a little more clarification. Sorry for being such a stunad.
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luposf



Joined: 17 Aug 2006
Posts: 21
Location: Italy

PostPosted: Sat Jan 09, 2010 5:57 pm    Post subject: Reply with quote

MomoInu wrote:
Anybody? Does anybody read these forums anymore? Bo-Ming can you help here?


MomoInu, I have exactly the same problem of You.
I hope someone will help us soon
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mwatsonphoto



Joined: 26 Feb 2010
Posts: 10

PostPosted: Wed Sep 08, 2010 7:26 am    Post subject: Re: AF micro-adjustment feature Reply with quote

Dear Bo-Ming,

I have a 24-85 with firmware v3.14 and am wondering if the instructions for adjusting the micro-focus is still the same as described below (the post is several years old).

Thanks,

Mike

conurus wrote:
With the advert of the AF micro-adjustment feature of the latest Canon 1D mark III camera, I do not need to hide this undocumented feature any longer.

If your lens was converted after 2007/01/01, you already have this feature. You may store an AF adjustment value in the non-volatile memory of the conurus chip to correct focus accuracy issues. If your lens was converted before that, a firmware update is available for the cost of shipping both ways.

Having this feature built into the lens means it is available to all camera bodies, not just the newest 1D mark III. For zoom lenses, there is a difference between the two, however. 1D mark III lets you store one adjustment value which applies across the entire zoom range. Canon recommends adjusting at the tele-end because that is more likely to run into focusing issues. A Contax N-series lens converted to EF mount lets you set a different adjustment value for each focal length. Please zoom to these focal lengths and make adjustments for each of these individually. It will affect the nearby focal lengths as well.

20mm
28mm
35mm
50mm
70mm
100mm
140mm
200mm
300mm

For 24-85, do NOT zoom all the way to 85mm if your firmware version is 3.05 or earlier because there is a firmware bug preventing you from using AF micro-adjustment at 85mm. The workaround is to make adjustments at 70mm instead. The value you store at 70mm will affect 85mm as well.

If minimum aperture is f/22,

  1. If your lens' firmware is 2.00 or later, manually focus to minimum focusing distance. If your lens' firmware is 3.00 to 3.03, additionally half-press the shutter to turn on the camera's meter.
  2. Set camera's aperture to f/22, set lens' aperture ring to f/8.
  3. Press DOF preview, and release it.
  4. Set camera's aperture to f/5.6, set lens' aperture ring to f/11.
  5. Press DOF preview, and release it.
  6. If the lens is 17-35/2.8 or 100/2.8, AND your lens firmware version is between 2.08 and 2.15, AND your camera has a 9 point or 45 point AF sensor, set camera's aperture to f/11 and lens's aperture ring to f/11. Otherwise, set camera's aperture to f/8, set lens' aperture ring to f/22.
  7. Press DOF preview, and release it. If your firmware is v2.00 or later, the "ONE SHOT", "AI SERVO" or "MF" indicator of your camera will start blinking. The number of times it blinks is the previous adjustment value you stored. If the previous value stored is negative, it will flash 31 times for -1, 30 times for -2, and so on. If the previously stored value is zero, or there is no previous value set, the MF indicator of the camera will not blink.
  8. Set desired adjustment value according to the following table. A positive value causes the point of focus to move away from you, curing a front-focus issue. A negative value causes the point of focus to move towards you, curing a back-focus issue.

    cam\lensf/4f/5.6f/8f/11f/16f/22
    f/5.6151413121110
    f/8987654
    f/113210-1-2
    f/16-3-4-5-6-7-8
    f/22-9-10-11-12-13-14

    For firmware version 3.04 or newer, these additional values are available:

    cam\lensf/4f/5.6f/8f/11f/16f/22
    f/6.3-15-16-17-18-19-20
    f/9-21-22-23-24-25-26
    f/13-27-28-29-30-31-32
    f/18-33-34-35-36-37-38
    f/7.1393837363534
    f/10333231302928
    f/14272625242322
    f/20212019181716

  9. Press DOF preview, and release it. If your firmware version is 2.00 or later, the "ONE SHOT", "AI SERVO" or "MF" indicator of your camera will flash 4 times.
  10. Set camera's aperture to f/8, set lens' aperture ring to f/4.
  11. Press DOF preview, and release it. If your firmware version is 2.00 or later, your camera will display "f/1.2" and the aperture will not open. Remove the lens from the camera body.


If minimum aperture is f/16,

  1. If your lens' firmware is 2.00 or later, manually focus to minimum focusing distance. If your lens' firmware is 3.00 to 3.03, additionally half-press the shutter to turn on the camera's meter.
  2. Set camera's aperture to f/16, set lens' aperture ring to f/5.6.
  3. Press DOF preview, and release it.
  4. Set camera's aperture to f/4, set lens' aperture ring to f/8.
  5. Press DOF preview, and release it.
  6. If the lens is 50/1.4, 85/1.4 AND your lens firmware version is between 2.08 and 2.09, AND your camera has a 9 point or 45 point AF sensor, set camera's aperture to f/8 and set the lens' aperture ring to f/8. Otherwise, set camera's aperture to f/5.6, set lens' aperture ring to f/16.
  7. Press DOF preview, and release it. If your firmware is 2.00 or later, the "ONE SHOT", "AI SERVO" or "MF" indicator of your camera will start blinking. The number of times it blinks is the previous adjustment value you stored. If the previous value stored is negative, it will flash 31 times for -1, 30 times for -2, and so on. If the previously stored value is zero, or there is no previous value set, the MF indicator of the camera will not blink.
  8. Set desired adjustment value according to the following table. A positive value causes the point of focus to move away from you, curing a front-focus issue. A negative value causes the point of focus to move towards you, curing a back-focus issue.

    cam\lensf/2.8f/4f/5.6f/8f/11f/16
    f/2.0272625242322
    f/2.8212019181716
    f/4 151413121110
    f/5.6987654
    f/83210-1-2
    f/11-3-4-5-6-7-8
    f/16-9-10-11-12-13-14

    For firmware version 3.04 or newer, these additional values are available:

    cam\lensf/2.8f/4f/5.6f/8f/11f/16
    f/4.5-15-16-17-18-19-20
    f/6.3-21-22-23-24-25-26
    f/9-27-28-29-30-31-32
    f/13-33-34-35-36-37-38
    f/5.0393837363534
    f/7.1333231302928
    f/10272625242322
    f/14212019181716

  9. Press DOF preview, and release it. If your firmware version is 2.00 or later, the "ONE SHOT", "AI SERVO" or "MF" indicator of your camera will flash 4 times.
  10. Set camera's aperture to f/5.6, set lens' aperture ring to f/2.8.
  11. Press DOF preview, and release it. If your firmware version is 2.00 or later, your camera will display "f/1.2" and the aperture will not open. Remove the lens from the camera body.


If minimum aperture is f/32

  1. If your lens' firmware is 2.00 or later, manually focus to minimum focusing distance. If your lens' firmware is 3.00 to 3.03, additionally half-press the shutter to turn on the camera's meter.
  2. Set camera's aperture to f/32, set lens' aperture ring to f/11.
  3. Press DOF preview, and release it.
  4. Set camera's aperture to f/8, set lens' aperture ring to f/16.
  5. Press DOF preview, and release it.
  6. Set camera's aperture to f/11, set lens' aperture ring to f/32.
  7. Press DOF preview, and release it. If your firmware is v2.00 or later, the "ONE SHOT", "AI SERVO" or "MF" indicator of your camera will start blinking. The number of times it blinks is the previous adjustment value you stored. If the previous value stored is negative, it will flash 31 times for -1, 30 times for -2, and so on. If the previously stored value is zero, or there is no previous value set, the MF indicator of the camera will not blink.
  8. Set desired adjustment value according to the following table. A positive value causes the point of focus to move away from you, curing a front-focus issue. A negative value causes the point of focus to move towards you, curing a back-focus issue.

    cam\lensf/5.6f/8f/11f/16f/22f/32
    f/8151413121110
    f/11987654
    f/163210-1-2
    f/22-3-4-5-6-7-8
    f/32-9-10-11-12-13-14

    For firmware version 3.04 or newer, these additional values are available:

    cam\lensf/5.6f/8f/11f/16f/22f/32
    f/9-15-16-17-18-19-20
    f/13-21-22-23-24-25-26
    f/18-27-28-29-30-31-32
    f/25-33-34-35-36-37-38
    f/10393837363534
    f/14333231302928
    f/20272625242322
    f/29212019181716

  9. Press DOF preview, and release it. If your firmware version is 2.00 or later, the "ONE SHOT", "AI SERVO" or "MF" indicator of your camera will flash 4 times.
  10. Set camera's aperture to f/11, set lens' aperture ring to f/5.6.
  11. Press DOF preview, and release it. If your firmware version is 2.00 or later, your camera will display "f/1.2" and the aperture will not open. Remove the lens from the camera body.


If minimum aperture is f/45 (Contax 645 lenses only)

  1. Manually focus to minimum focusing distance.
  2. Set camera's aperture to f/45, set lens' aperture ring to f/16.
  3. Press DOF preview, and release it.
  4. Set camera's aperture to f/11, set lens' aperture ring to f/22.
  5. Press DOF preview, and release it.
  6. Set camera's aperture to f/16, set lens' aperture ring to f/45.
  7. Press DOF preview, and release it. The "ONE SHOT", "AI SERVO" or "MF" indicator of your camera will start blinking. The number of times it blinks is the previous adjustment value you stored. If the previous value stored is negative, it will flash 31 times for -1, 30 times for -2, and so on. If the previously stored value is zero, or there is no previous value set, the MF indicator of the camera will not blink.
  8. Set desired adjustment value according to the following table. A positive value causes the point of focus to move away from you, curing a front-focus issue. A negative value causes the point of focus to move towards you, curing a back-focus issue.

    cam\lensf/8f/11f/16f/22f/32f/45
    f/14393837363534
    f/20333231302928
    f/29272625242322
    f/40212019181716
    f/11151413121110
    f/16987654
    f/223210-1-2
    f/32-3-4-5-6-7-8
    f/45-9-10-11-12-13-14
    f/13-15-16-17-18-19-20
    f/18-21-22-23-24-25-26
    f/25-27-28-29-30-31-32
    f/36-33-34-35-36-37-38

  9. Press DOF preview, and release it. The "ONE SHOT", "AI SERVO" or "MF" indicator of your camera will flash 4 times.
  10. Set camera's aperture to f/16, set lens' aperture ring to f/8.
  11. Press DOF preview, and release it. Your camera will display "f/1.2" and the aperture will not open. Remove the lens from the camera body.


WARNING: if you enter any incorrect aperture value, do NOT complete the sequence, but immediately remove the lens from the camera body. Failure to do so may leave unintended side-effects which are difficult to correct. Merely turning off the camera does NOT exit adjustment mode.

WARNING: please record all your adjustment values, as they will be erased if you need to send the lens back to us for a firmware upgrade.

Based on customer feedback, visual feedback is added to firmware v2.00 onwards.
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conurus
Site Admin


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

PostPosted: Wed Sep 08, 2010 5:36 pm    Post subject: Reply with quote

Yes it is still the same.
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Norman



Joined: 24 Oct 2010
Posts: 6

PostPosted: Tue Jan 04, 2011 8:30 pm    Post subject: Microadjustment - stupid question. Reply with quote

In your Micro adjustment feature you mention lens firmware of 2.00 or later and lens firmware of 3.00 - 3.03, etc. How do I know what firmware my lens has? I thought only the camera has firmware?
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conurus
Site Admin


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

PostPosted: Thu Jan 06, 2011 6:28 am    Post subject: Reply with quote

You may enter your lens' serial number into our lens tracking database.

http://en.conurus.com/track.php

Thanks!

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



Joined: 24 Oct 2010
Posts: 6

PostPosted: Fri Jan 07, 2011 2:49 am    Post subject: Firmware Reply with quote

The firmware for my 24-85N lens is 3.12H, which I can't find on the chart, so where does that fit into the microadjustment instructions. Does anyone have any answers?
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conurus
Site Admin


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

PostPosted: Fri Mar 25, 2011 9:14 am    Post subject: Reply with quote

In order to make our AF microadjustment feature easier to use we created a web application.

http://en.conurus.com/afmicroadjustment.php

You would only need to put in your lens' serial number, choose which focusing distance you are adjusting, and the adjustment value, and the web application will generate a script that you could simply follow and dial in the adjustment.
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hungmo



Joined: 11 Jan 2010
Posts: 35
Location: Hong Kong

PostPosted: Sat Aug 20, 2011 4:32 am    Post subject: Reply with quote

The web-base micro adjustment table is not working on N17-35
When I choose a non-zero value, the outcome will change to f/?. Kindly please fix it asap as I need to calibrate my lens... Thx
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conurus
Site Admin


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

PostPosted: Mon Aug 22, 2011 6:21 pm    Post subject: Reply with quote

Thank you for reporting this problem to us. Is this regarding s/n 15130160, firmware 3.13j?

Would you mind letting us know which browser you are using? I am not able to reproduce the problem with IE8 or Firefox 6.

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hungmo



Joined: 11 Jan 2010
Posts: 35
Location: Hong Kong

PostPosted: Tue Aug 23, 2011 3:45 pm    Post subject: Reply with quote

Correct. My N17-35 S/N: 15130160
I also try on other lens (e.g. N85, N70-300) using the database, but still my browser cannot shown the number correctly. I tried on safari v5.1 (mac), Firefox 3.6.16 (mac) & IE 8 (PC), experiencing the same problem.
Much appreciated that you can send me the "calibration table" for all lens, since recently I'm re-calibrating all of my lens. Cheers.
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conurus
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Joined: 15 Aug 2006
Posts: 795
Location: Vancouver, Canada

PostPosted: Tue Aug 23, 2011 6:30 pm    Post subject: Reply with quote

I was using "track modification progress" on your lens first, and then scroll down, and there is a hyperlink saying "af microadjustment" "click here". That worked.

I am trying to fix the use case where you directly go to AF microadjustment menu item and enter a serial number.

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

PostPosted: Wed Aug 24, 2011 2:09 am    Post subject: Reply with quote

All remaining problems have been fixed, I think. Please let me know if it still doesn't work for you. Thanks!
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hungmo



Joined: 11 Jan 2010
Posts: 35
Location: Hong Kong

PostPosted: Wed Aug 24, 2011 1:40 pm    Post subject: Reply with quote

Now works perfectly. Thx.
Wonder still you can PM me the table, easier for me to mark on tables during calibration.
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