The Canon BG-E7 Battery Grip
That’s a pretty good deal considering the fact that Pricegrabber has the lowest price for this battery grip at around $230 (and that’s not even with free shipping). Just a heads up to those who own this camera and a reminder to myself that this would be a great Christmas gift.
I’ve never understood the purpose of battery grip except more battery life and taking pictures vertically. Sounds like it can give more camera shake as its downside.