I use my Canon 5D mark 3 with the official BGE-11 battery grip and I have noticed a problem.
When using the grip to shoot, occasionaly the shutter button will stop functioning.
AF stops and the display is static.
If I remove the camera from my eye, release the shutter and then put it back to my eye the shutter button and AF starts working again.
Anyone else with this combination had this problem?
Battery grip is properly attached, camera on latest firmware and working perfectly apart from this.