Customer Rating: 
Summary: A must!
Comment: It's a must for any serious and almost serious shooter! Giving you the flexibility of having the extra battery and also of having a regular AA size battery holder for those times when you forget to recharge your Canon batteries, the BG-E4 also extends your ability of shooting in portrait mode. It also adds the benefits of camera stability when shooting slower speeds than 1/30. I have shot up to 1/8 of a second handheld with good results.
Customer Rating:
Summary: Canon BG-E4
Comment: As always, the Canon Brand battery/verticle grips are well made and top notch. This is the 6th one I have owned between various Film and Digital SLRs. I ounce tried a third party grip on a 30D...will never try that again.
Customer Rating:
Summary: A Must Have
Comment: I never carry my 5D without this grip. It allows me to shoot all day and to go vertical with the controls at the proper location. I keep one on my secondary camera as well. If you plan to do some all day shooting, this is a must have.
Customer Rating:
Summary: Canon 5D Battery Grip
Comment: Before I bought this Canon BG-E4 I succumbed to a less expensive knockoff. MISTAKE!!! I became unhappy with the knockoff after only a few days of shooting pictures of my granddaughter. I then purchased the Canon Battery Grip and it was a world of difference. The Canon grip is actually much easier to use. I like having double battery power, and an extra shutter button on the grip. I have found that it also seems to give my 5D a more balanced feel, and a more secure feeling when I am holding it. This accessory completes a great setup for the 5D. Bob Pavelsky -- A Thousand Words -- www.athousandwords.name.
Customer Rating:
Summary: 5D grip
Comment: When I had the 20D I bought the grip. Now that I bought the 5D, I had to get the grip again. along with the canon leather strap, this makes a very handy and usefull accessory when shooting weddings.
Summary: A must!
Comment: It's a must for any serious and almost serious shooter! Giving you the flexibility of having the extra battery and also of having a regular AA size battery holder for those times when you forget to recharge your Canon batteries, the BG-E4 also extends your ability of shooting in portrait mode. It also adds the benefits of camera stability when shooting slower speeds than 1/30. I have shot up to 1/8 of a second handheld with good results.
Customer Rating:
Summary: Canon BG-E4
Comment: As always, the Canon Brand battery/verticle grips are well made and top notch. This is the 6th one I have owned between various Film and Digital SLRs. I ounce tried a third party grip on a 30D...will never try that again.
Customer Rating:
Summary: A Must Have
Comment: I never carry my 5D without this grip. It allows me to shoot all day and to go vertical with the controls at the proper location. I keep one on my secondary camera as well. If you plan to do some all day shooting, this is a must have.
Customer Rating:
Summary: Canon 5D Battery Grip
Comment: Before I bought this Canon BG-E4 I succumbed to a less expensive knockoff. MISTAKE!!! I became unhappy with the knockoff after only a few days of shooting pictures of my granddaughter. I then purchased the Canon Battery Grip and it was a world of difference. The Canon grip is actually much easier to use. I like having double battery power, and an extra shutter button on the grip. I have found that it also seems to give my 5D a more balanced feel, and a more secure feeling when I am holding it. This accessory completes a great setup for the 5D. Bob Pavelsky -- A Thousand Words -- www.athousandwords.name.
Customer Rating:
Summary: 5D grip
Comment: When I had the 20D I bought the grip. Now that I bought the 5D, I had to get the grip again. along with the canon leather strap, this makes a very handy and usefull accessory when shooting weddings.