Hi all,
I've been aware of this site for a long while but never contributed before.
I have been having focus lock problems with my 5D Mk2 which I've had for about 2 months; as there have been numerous references to problems around the web, though nothing concrete and well-described that I can find, I wanted to ask exactly what is known and what can be done.
The subjects I have been shooting have been ideal, well-lit with lots of contrast detail that would normally be easy for AF to lock onto. People, flowers, anything really that should be relatively easy for AF to accommodate. Even a sheet of large black-on-white text seems to be a problem at times.
The symptoms I get are that the AF focuses until
almost perfect but just blinks at me to say no lock achieved, and I have to keep operating the shutter button to 'nudge' it towards a lock. It's not every time, no, and sometimes it works correctly, but it is a problem enough times to make me think it is worse than my old 1n. It happens both on One Shot, AI Focus and AI Servo, and whatever AF points I select (I mostly use the centre point.)
The lenses I am using are relatively good quality - Tokina ATX PRO series (all f/2.
and a Sigma 70-200 f/2.8 HSM - and worked very well indeed with the 1n.
It is extremely frustrating missing shots because the camera seems unable to lock, even if through the viewfinder it seems almost on the button.
Has Canon admitted any problem with 5D Mk2? Is there a firmware update in the pipeline to address it? I have already installed the update that is available at present.
Thanks all.