I had just looked into grips. Adorama has a video for two different models other than Canon. One thing to watch for is the grip itself. Some actually have bumps to help your grip and others have a port on the side for a monitor to plug in to and also act as a remote shutter release. That one also had a spot inside the grip for the battery door you had to remove to use it. I think it was like Photoix or something like that.