When I attach my battery grip to EOS 50D, the main dial doesn't work.

[thepaulle]

When I attach my battery grip to EOS 50D, the main dial doesn't work. If I remove my battery grip.the main dial works fine. Has anyone else had this problem?

[cicopo]

It may be the result of the switch on the battery grip being ON. If you use the camera in Portrait mode you turn that switch on to make the shutter button on the grip active & maybe it also switches the wheel function too.

[thepaulle]

Thanks.I'll try that and see what happens.