Introduction to the Canon 40D 

check your iso set it to auto if you havent already

I hope you solved it. If not, it's the little button to the right on top. You adjust it with the small wheel just in front of the button. I usually use Av-mode.

You have to be shure that C.Fn II in the Highlight tone priority is Disabled in order to get ISO 100 again.

So just a screen and some buttons

did you get it working?

@@daktarioskarvannederhosen2568 No. I haven't bought anything for it yet. Been sitting in my room collecting dust next to other cameras that met the same fate. They have become decor pieces. 😁

@@EddieLeal i bet it works if you get a battery for it. i think the battery it uses is common to several canon camera models. BP511 i think it is.

@@daktarioskarvannederhosen2568 You're probably right. Needs a lense/memory card too.

It's in "drive", so press the 2nd button up top labeled AF Drive and turn the back wheel one click to the right,.clockwise. For each button it controls two things - the right one is controlled by the wheel on top, the 2nd by the wheel on the back (with the set button).