09-04-2021 03:56 PM
Hello, Canon user of almost 15 years here. I used to leave whatever lens I lhad ast used on the camera while I wasn't using it (the 5D mkii & mkiv). Recently I got a pellican case and for storage purposes traveled with the lenses off (and body caps on). ...When I reattached the lenses (properly, nothing weird) the camera would not fire. Everything else as it should be. Shutter would not go. There may have been an error message but I honestly can't remember. This intermittently happens now once when I was about to use a telephoto for a kiss at a wedding (I'm a wedding photographer). STRESSFUL! And defeated the purpose of traveling across country with a MKIV (I am currently using the EOS r as well) and 70 - 200.
Anyone else experience this? Is this a firmware issue? I have never had this happen before this year.
09-04-2021 08:06 PM
This may be a case where CAREFUL cleaning of the contacts on the camera body and lens would be helpful, it is possible that something got onto the contacts while the lenses were being stored or during transport. If the camera cannot communicate with the lens, it will assume there is no lens attached.
Canon recommends cleaning only with a soft cloth. There are other methods for cleaning electrical contacts that have been contaminated but if you are not already familiar with this process, your camera and lenses are not the place to learn. Get them to Canon for this sort of service.
09-05-2021 12:54 AM
Lets check if this is a focus related issue. When you move the AF/MF switch to MF and press the shutter does the camera fire?
09-07-2021 10:36 PM
I shoot in manual and switching the settings did not remedy the issue
09-08-2021 09:54 AM
Don't just switch settings do the factory reset to default. If that doesn't clear it up you need to call Canon for service.
1 (800) 652-2666
09-06-2021 10:08 AM
In the area of probability it is not a firmware issue and it is not a cleaning the contact issue. Other than the AF/MF suggestion I really don't have a specific cause but the likelihood of the first two is very small.
Do the normal reset to factory default settings. Menus, tools, clear all settings and clear all custom settings. That's about all you can do on your own.
05/31/2023: New firmware updates are available.
EOS R6 Mark II - Version 1.1.2
05/18/2023: New firmware updates are available.
EOS Rebel T100 - Version 1.1.0
EOS 5D Mark IV - Version 1.4.0
EOS 6D Mark II - Version 1.2.0
PowerShot Elph 360HS - Version 126.96.36.199
PowerShot SX420 IS - Version 188.8.131.52
PowerShot 620 HS - Version 184.108.40.206
PowerShot SX720 HS - Version 220.127.116.11
PowerShot G1X Mark III - Version 18.104.22.168
PowerShot G7X Mark II - Version 22.214.171.124
PowerShot G9X Mark II - Version 126.96.36.199
04/20/2023: New firmware version 1.4.1 is available for EOS R3
03/30/2023: New firmware updates are available.
EOS 1DX Mark III- Version 1.7.1
Speedlite EL-1 - Version 1.0.2
03/30/2023: Product Advisory for EF50 F1.2 L USM
03/30/2023: Product Advisory for EOS R10
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM
Canon U.S.A Inc. All Rights Reserved. Reproduction in whole or part without permission is prohibited.