5D Mark II Team

Improvements & Gear

Firmware Update 1.2.2


  • Firmware Update 1.2.2 – EOS 7D
  • Canon Official Announcements
  • Download
  • Additional Comments


As expected and mentioned in our last article, Canon has just announced a firmware update that fixes the “iris jitter” issue that we previously reported here and here for the Canon 5D Mark II on April, 2010, especially affecting macro lenses (but not limited to that kind of lenses).

Fortunately all those efforts to report that issue did help all Canon customers using all HDSLR cameras.

The fix was firstly released for the EOS 5D Mark II and then for EOS 1D Mark IV and EOS Rebel T2i/550D.

Now it’s time for the EOS 7D! This firmware update also fixes other issues as detailed below.

We thank Canon once again for listen to their customers. That really makes a difference.


Extracted from Canon website:

Firmware Version 1.2.2 incorporates the following fixes.

  1. Fixes a phenomenon in which the set aperture moves when shooting movies in manual exposure mode using some Canon lenses (such as macro lenses).
  2. Fixes the AF point-selection behavior of the C.Fn III-7 (Manual AF pt. selec. pattern) custom function when set to [1].
  3. Fixes the AF point display for the viewfinder electronic level when shooting in the vertical position.
  4. Corrects misspellings in the Spanish and Thai menus for applicable products.


Please, before downloading and updating your camera, read the entire contents of Canon download page.

You can download the new firmware from here:



Thanks to all people who helped on this regard.

If you appreciate our efforts to help all Canon users, please consider supporting us.

Thank you very much in advance.

July 22, 2010 - Posted by | Articles & Tech Info, CANON, EOS 7D, Firmware Updates, News & Info | , , , , , ,

1 Comment »

  1. Hello!
    The problem I encountered deals with well-known phenomenon of “iris jitter” in EF macro lenses (mine is EF 100 f/2.8 USM). My Camera is EOS 7D, firmware v 1.2.2 that is just dedicated to the fixing of the above mentioned phenomenon. O.K., in video mode this phenomenon is not manifested, but in still shooting mode it is. In most cases it manifests as follows: first shot is always done O.K., one of the next (usually 2nd, rarely 3rd or 4th) is spoiled (aperture remains open which results in harsh overexposure), all the rest is good. The same way the aperture behaves when, instead of shooting, I press DOF preview button. This malfunction manifests only after the lens is freshly attached; further, if the lens remains attached, the camera’s being turned off and on does not cause any iris malfunction. This phenomenon cannot be ascribed to the lens itself, because with other EOS bodies (I have, for example, EOS 10D and EOS 33V) it works perfectly. It ought to be mentioned that earlier versions of the firmware were free of this particular phenomenon. I suppose I am not the only one to experience this problem, but hope that my report could also be fruitful for CANON in improving her products and support.
    With respect,

    Comment by Michael Turkovsky | October 6, 2010 | Reply

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