Whilst on a photo shoot with a friend to the Circuit de Jerez in Spain on Saturday to photograph the new F1 cars about 75% into the day i got this error message! :
Er 99 Shooting is not possible turn off the power switch to OFF and ON again. or re-install battery.
Done both these and the same issue every attempt I made to take another image.
Also removed battery grip cleaned contact points and placed single battery in battery compartment same issue. also cleaned lens contact points same issue.
I can take one image then when I try to take another the Err message appears and I have to switch off the camera ten OK to take an images, Very frustrating! Have done some research and this
Err99 covers a number of possible problems! Have written to Canon and await reply.
Anyone come across this on 40D? or other DSLRs (Canon)
Thanks Peter