40d error 99

Started Oct 13, 2007 | Discussions thread
New MemberPosts: 10
Re: 40d error 99 - first
In reply to diamonded, Dec 2, 2007

Bought the 40D, 50/1.4 USM and a Sandisk IV 2GB card two weeks ago.

I've taken about 600 photos up until recently and never had the error99 until last night.

I was at a club, practicing with my 40D, taking pictures of two consecutive performances. During the second performance I got the error99 all of a sudden. I had been shooting with and without the on board flash. Switching the 40D on/off didn't fix it but re-inserting the battery did and I could get back to taking pictures.

I've had the 50/1.4 USM on the 40D ever since the purchase, and I always make sure to keep the camera in my Slingshot when not in use. The weather here (Denmark) is getting colder and the few times I've been out taking pictures I've made sure to keep the camera in a plastic bag inside the Slingshot to deal with the changes in temperature.

I shoot RAW all the time. As someone mentioned, this could be related to RAW/built-in flash. I haven't upgraded to the latest firmware yet.

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