40D back button focus settings

[rangacharee]

Hello all.

                 I would be extremely grateful for your help on the back button focus with the 40D. I did the settings in the menu, and all is working fine except when I set the focus to AI servo. In one shot mode the camera's focus works fine,but when I want to do action shots and keeps the AF on button depressed do I have  to put the drive in burst mode?. It does not seem to work in single shot drive mode, I would keep the AF on held down but when I press the shutter button or hold it down only one shot  is fired. thanking you in anticipation.

[cicopo]

If you want mone than 1 shot when you press the shutter button then YES you need to change the DRIVE mode.

[rangacharee]

Thank you very much for the reply will try tonight

[cicopo]

If I remember right putting itno Sport Mode will change the drive to continuous but in the other modes the operator needs to change it to suit either single shot or continuous.

[rangacharee]

Thanks, I tried that but the sports mode is overriding the back button focus settings

[jrhoffman75]

You need to go to Tv mode and select the shutter speed you want. The custom functions don't work in the icon modes, on the creative modes.