The Canon EOS 5D Mark II has been a huge success since its release. Read Canon EOS 5D Mark II Review [Video].
Thanks for extraordinary effort of Canon engineers, Firmware 2.0.4 is really a great update. But after many deep tests, some guys have found and confirmed there’s a bug/malfunction in this firmware.
It is not normal, and should not happen.
When a Canon EF 100mm f/2.8 Macro USM lens is mounted on the Canon 5D Mark II and the user manually changes focus (rotates focus ring), the lens changes the iris/aperture “by itself”, even when the digital camera is in full manual mode.
It happens in PAL and NTSC modes and does NOT happen with Firmware version 1.1.0.
This bug have been tested by several users with many copies on many digital camera bodies, so it’s not an isolated lens problem.
We use Canon digital camera gear and we love it. 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 understand that this firmware update is a hard work. But maybe there weren’t given enough resources to support this extraordinary effort made by Canon engineers.
It’s the priority that Canon fix this problem immediately. Which could be a great opportunity for Canon to add these features and keep it as a best seller for even longer time.
Tags: 5D Mark II, bug, Firmware, lens
