5D Mark II Team

Improvements & Gear

Canon aware of IRIS issue?


  • Response given by Canon
  • Comments


Canon has been contacted by many customers in the last two weeks.

One member of the Canon community received an answer from Canon Tech support after the report he/she sent regarding the issue/malfunction found in Firmware 2.0.4 (for full details of the problem please read the original Report here and the Update here).

Below is quoted part of the answer given by Canon (we keep privacy of the sender):

“Dear X,

Thank you for your patience in awaiting my response.

I have been investigating your findings for the past week and can confirm that Canon Inc are aware of this issue and are currently investigating.

I understand this occurs predominantly with the 100mm f2.8 MACRO lens.


Thank you for your understanding.

To reply to this mail please use this link:  xx

We aim to answer queries as soon as possible. Responses on average take 1 to 2 business days (or the next working day if submitting on a weekend or public holiday).

Yours sincerely,


Canon Support Centre”


We encourage Canon users who have EOS 5D Mark II and the 100mm 2.8 Macro lens or any other lens experiencing the explained malfunction to report it to Canon (contact information can be found here).

Please note that this is a Firmware issue, not a lens issue.

Not all reports sent to Canon were responded, but we sincerely hope Canon fix this issue in near future (especially since it’s not limited to “Macro” lenses) and also add some additional “very possible” functions to the next update.

Thanks in advance to everyone supporting and especially to Canon for listening to their customers.

April 12, 2010 Posted by | Articles & Tech Info, Campaigns, News & Info, Reports | , , , , , , , | 2 Comments

Malfunction in Firmware 2.0.4 UPDATE


  • Introduction
  • Video Tests
  • Additional Feedbacks
  • Considerations


For a full detailed report, please read our previous article.

We have been receiving additional reports from other users regarding the malfunction we found on Firmware 2.0.4: the “IRIS jitter”

Not all lenses are affected. This phenomenon occurs much more often with Macro lenses, but it is NOT limited to Macro lenses.

Please note that this is a firmware issue, not a lens issue.

How to reproduce the issue

As we explained in the previous report, it is very easy:

Set camera to M mode, Live View to “Stills+Movie – Movie Display“, which is the correct mode to get “full manual control” on movie mode. Then turn ON Live View mode and rotate the focus ring, and you will notice the iris jitter watching it directly or watching the image on the camera’s LCD, also hearing the noise of the iris.

Remember the camera is now in “full manual mode” for movie/video mode, so the iris should not change “at all” unless the user intentionally does change it.

Clarification of the issue: It is not the iris/diaphragm is closing or opening a step and remaining there. It is a jitter: a fast open/close or close/open movement of the IRIS, mostly depending on the direction the focus ring is being rotated. It usually occurs in small values (1/3 f-stops), with the consequence that the image is also suffering that “jitter” when recording a video clip (or even when not recording), making the footage unusable.

Important note: the IRIS jitter is NOT related to the amount of light being gathered by the sensor, nor being metered by the camera, because the same issue occurs in a dark room or with the lens cap on.


Thanks to the users who made their video tests and sent the links to us.

▪ With a Canon EF 100mm f/2.8 Macro USM lens:
Image jitter can be seen on the camera’s LCD monitor lot of times
It’s also recorded on the footage, making it unusable. It is much easier to see whilst testing or recording than in this video test. The most evident ones at 0:48, 0:57, 1:01, 1:03:

▪ With a Canon EF 300mm f/4L IS USM lens:

▪ With a Sigma 150mm f/2.8 Apo Macro:

▪ With a Canon EF 100mm f/2.8 Macro USM in a dark room:

For obvious reasons we can’t post a video showing the issue, but those users who own this lens can do the test in complete darkness, following the instructions, and then hear the iris jitter lot of times.

Note: this test can also be done with the lens cap on with the same results.


Some feedbacks from readers regarding this issue with other lenses:

Canon 300mm 2.8L IS USM:

“Canon 300 2.8 IS + 1.4x TC – does it pretty much every time you cycle focusing from around 20m to infinity position
Canon 300 2.8 IS – does it at times, a bit randomly, not every time, seems to occur a bit more toward the near focus end”

Tamron SP Di  90mm 1:2.8 Macro:

“Firmware 2.0.4 iris jitter malfunction on Canon 5D Mark II tested also with the following lens in FULL manual mode (iris jitter appears nearly EVERY time when rotating the focusring, so it is totally unusable):

Tamron SP Di  90mm 1:2.8 Macro”


We are only reporting a malfunction with the sincere hope it will be fixed at some point.

We do understand the HUGE efforts made by Canon engineers with the latest firmware update, and we are really grateful for that.

This is a great chance for Canon, not only to fix this issue, but also to add some of the features improvements hugely requested by thousands of 5D Mark II users around the world. We have already mentioned them in our previous report (click here).

We love this extraordinary camera and we want the best for it, that’s why we put very big efforts on everything related to the 5D Mark II, because we know its huge potential.

We are confident this issue will be fixed and possibly some features added too on a new update, for the benefit of all Canon users.

We sincerely thank Canon for listening to customers and being steps ahead far of competition.

April 8, 2010 Posted by | Campaigns, News & Info, Reports, Tech Ideas | , , , , , , , , | 2 Comments

Malfunction in Firmware 2.0.4


  • Malfunction in 2.0.4 – IRIS issue
  • Video Tests
  • Test Update
  • Additional Reports – UPDATED
  • Considerations

Note: please also check the update to this report.


Firmware 2.0.4 is really a GREAT update, an extraordinary effort made by Canon engineers. But after some deep tests we have found and confirmed a bug/malfunction in this firmware.

▪ Description of the problem:

When a Canon EF 100mm f/2.8 Macro USM lens is mounted on the camera and the user manually changes focus (rotates focus ring), the lens suffer from an “IRIS jitter”, even when the camera is in full manual mode.

It is not normal, and should not happen. The tests were made by several users with many copies on many camera bodies, so it’s not an isolated lens problem.

This malfunction always occurs in this situation:

When the camera is set to M (Manual) mode and in Live View mode (set to Still+Movie – Movie Display), which is the correct mode for “full manual control” in movie mode.

Additional details:

. It does NOT happen with Firmware version 1.1.0
. It happens WHEN recording video and also when NOT recording video
. It happens with ISO and every possible automatic setting fixed to a value, or turned off
. It happens in C1/C2/C3 too (if they are registered as “M” modes for movie recording)
. It happens in PAL and NTSC modes
. It happens in  both lens modes: MF and AF mode
. The camera does NOT tell any change in aperture setting (it keeps showing the same value) nor give any kind of advice either
. The iris shifting can be heard (and seen)
. The brightness shifting of the image is visible on the camera’s LCD monitor when the iris/aperture shift occurs
. The iris/aperture usually changes in small values, but enough to make a footage unusable, so using this great lens for movie/video purpose may result impossible


These two videos clearly show the problem when the Canon EF 100mm F/2.8 Macro USM is mounted on the 5D Mark II in the full manual mode for movie mode, and the focus ring is rotated from macro to infinity and vice versa. Remember that this does not happen with firmware 1.1.0.

Iris “jitter” when changing focus:

▪ Image jitter can be seen on the camera’s LCD monitor lot of times
It’s also recorded on the footage, making it unusable. It is much easier to see whilst testing or recording than in this video test. The most evident ones at 0:48, 0:57, 1:01, 1:03:

Please read full descriptions on each video for further details.


We made another simple test to prove this issue is not related to the light entering the lens/sensor/camera: If you reproduce the test, with everything set to Manual as described but in a dark room, the same issue occurs (you can hear the iris jitter when changing focus).

Conclusion: the IRIS jitter is not related to light metering or any kind of “compensation” being done by the camera due the different amount of light entering the lens when focusing, nor any other light/sensor related matter.

Since the test is done in complete darkness we cannot post a video to show it, but every user can reproduce and verify it by their own with ease.


We received some additional reports from many users.

Some of them:

– Regarding the malfunction of the Canon EF 100mm 2.8 Macro USM:

“By observing the IRIS as I adjusted the aperture I noticed that sometimes it doesn’t go correctly to the right size. I even noticed that sometimes as I stopped down the aperture for a step the IRIS would actually open a bit instead.”

– Other reports: We also received reports regarding 3rd party lenses experiencing “weird noises” coming from the iris, or iris/aperture inconsistencies when mounted on 5D Mark II with firmware 2.0.4 that weren’t present on firmware 1.1.0.

It seems very possible that these issues also occur with some 3rd party lenses and maybe other Canon lenses as well.


– We received a video test from a user reporting this iris “jitter” on a Canon EF 300 F/4L IS USM
Check it here: http://www.youtube.com/watch?v=APgK5gdM69M

The user confirmed the camera was set to M and Live View mode to “Sills+Movie-Movie Display”, which is the correct “full manual mode” for video, where “the camera shouldn’t be moving the iris *at all* unless the user is changing it”.

This confirms that this malfunction also affects other Canon lenses when using firmware 2.0.4 on the 5D Mark II.

It might sound weird, but we wonder if this issue could be related to the supposed fix:
“Fixes a phenomenon where communication between the camera and the attached lens is sometimes interrupted after manual sensor cleaning. (This phenomenon only affects units with Firmware Version 1.2.4.)”.


We understand that this firmware update is a VERY hard work. But maybe there weren’t given enough resources to support this extraordinary effort made by Canon engineers.

That may explain the initial undetected bug/malfunction on version 2.0.3 (that was reported just 1 day after its official release by many professionals and by this team who use 5D Mark II for serious movie/video purposes).

We use Canon gear and we love this camera. That’s why we try to do our best in the most constructive possible way to encourage Canon to give the best features and results to their customers.

We want the best from this extraordinary camera, for every user, and also the best for Canon as company for making it possible.

We request Canon to fix this problem. That’s the priority.

But we also request Canon to carefully read and consider what so many customers are asking: to include some additional functions that are really possible and even easy in many cases.

The 5D Mark II has been a huge success since its release. This could be a great opportunity for Canon to add these features and keep it as a best seller for even longer time.


AutoISO limiters, so much requested by photographers (like the much cheaper Canon T2i/550D)
More frames in Bracketing mode
Movie Crop function, to allow video recording at 1:1 of the central area of the sensor (at the highest possible resolution: Full HD, HD or at least in SD like the much cheaper Canon T2i/550D)
▪ “EDIT” function in playback menu, allowing to Cut and Save part of a video clip (available in most cheaper cameras)
An OPTION to display Audio meters bars in Live View mode and when recording video
An OPTION to disable the “white square” when using HDMI output, to get a “clean” video output (so easy and so requested), and keep that signal at the maximum possible resolution when recording video
More flexibility for the “Info” button in Live View mode (more display options: current Live Histogram is great but it’s only displayed with extra information, reducing the overall frame visibility)

These are hugely requested functions that CAN be implemented via firmware. They don’t require hardware changes.

For a longer and more detailed list, please check this article.

We sincerely want to thank Canon for listening to their customers and being steps ahead of the competition.


April 5, 2010 Posted by | Articles & Tech Info, Campaigns, EOS 5D Mk II, News & Info, Reports, Tech Ideas | , , , , , , , | 33 Comments

Canon Official Update Information


  • Introduction
  • Canon Announcement
  • Additional Thoughts



As reported before, the new Firmware 2.0.3 has some bugs/issues, especially related to the new Audio functionality.

Some active users have reported that to Canon (thanks to all of them).

And Canon got aware of it.


Important Update Information for
Firmware Update Version 2.0.3

” Thank you for using Canon products.

We have learned that some users of the Canon EOS 5D Mark II digital SLR camera are experiencing issues with Firmware Update Version 2.0.3.

We are working on a new firmware update to address these phenomena, which will be available soon. If you have not registered your EOS 5D Mark II, please register so we will be able to notify you via email when future firmware updates become available for download.

Canon always strives to provide the highest quality products to our customers. We sincerely apologize for any inconvenience these phenomena may have caused. We appreciate your kind patronage and support.”


THANKS CANON for the announcement and your commitment to give the best possible to your customers. We appreciate your efforts. All you are doing will reflect in a long term company profit.

This would be a good opportunity to get even some minor additional improvements, like:

– Option to have histogram overlay whilst actually recording
– Have audio meters showing whilst recording
– Easier/quicker way to change audio levels
– AutoISO limits (which is in our List of Fixes & Request since early 2009)
– Crop Video mode? (which is in our List of Fixes & Request since several months ago)
– Cleaner HDMI output, and at Full HD while recording if possible? (also in the list)

Of course, the most important is to fix every possible current issue

Custom Modes are essential for thousands of users.

March 17, 2010 Posted by | Articles & Tech Info, Firmware Updates, News & Info | , , , , , , , | 1 Comment

Bugs / Issues on Firmware 2.0.3


  • Bug / Issue
  • Considerations
  • Contact Canon


The firmware 2.0.3 is in fact a great update and has been very long awaited by thousands of customers, as it was demonstrated by the high overload that Canon servers suffered few hours after it was announced to be available for download.

But a day after its release, there are lot of reports telling an issue related to the new Audio functionality not being registered properly in Custom modes.

Below are few of those reports:

“No audio in C modes unless I set my audio levels in one of the “creative” modes (M, Av, Tv, ) first and then go into my C mode of choice. Kinda defeats the purpose of having a C mode if I have to go to another mode first…”

“I have found the same thing. It only seems to work if you move from one of the other creative modes to a Custom mode. If you turn the camera OFF, then go to a Custom mode, turn the camera back ON, and then try to record Manual audio, you will get signal levels on your meters, but no audio is recorded.”



Probably if video/movie professionals had been given the firmware to test months ago, this bug would have been picked-up and other very easy features could have been suggested for inclusion:

– Option to have histogram overlay whilst actually recording
– Have audio meters showing whilst recording
– Easier/quicker way to change audio levels

We really hope Canon solve it soon. And also add some of the above suggestions too, why not? They are completely possible, just like AutoISO limits.

But the most important now is to fix this problem.

We encourage all customers to report this bug/issue to Canon.

It has to be fixed because custom modes are VERY important and even essential for professionals who use the 5D Mark II on a daily basis.

Just imagine you make all your settings and register them in a Custom mode, like most users and professionals usually do. Then after turning ON the camera you select your Cx mode and start filming, but after you finish your work you notice there is no audio on the footage! It is not normal.


Report this problem. We all need it fixed.

You can Contact Canon by phone or email (we strongly suggest to call Canon if you are in USA or Canada):

– USA: 1-800-828-4040
– CANADA: 1-800-OK-CANON (1-800-652-2666)
– USA e-mail Support

– UK: 0844 369 0100
– Europe e-mail Support
– Europe  Telephone Support

March 17, 2010 Posted by | Articles & Tech Info, Campaigns, CANON, EOS 5D Mk II, Firmware Updates, News & Info, Reports | , , , , , | 8 Comments


%d bloggers like this: