If there is one thing that I don’t like, it’s running out of battery power in camera and having to switch out the battery. On a DSLR camera that can be a huge pain, especially if you have your camera mounted to a tripod or a stabilizer rig. To get around that you need 2 things, first is more battery life, second is an easier way to switch out the batteries. If you’re looking for those two things what you need is a battery grip.
I own a Canon T2i and it is great, love the thing for pictures and video, but after getting frustrated I decided to buy a battery grip and it is amazing. I bought a generic one, but still it holds two batteries at a time and is very flexible. The door to change batteries is on the side, not on the bottom, so there isn’t any hassle. Also as an added bonus there was a special battery plate that holds 6 AA batteries, so there is now one more option in powering my camera. Nice, what a deal. Not to mention that doing portraits is now easier as well since there is a button allowing side stills in the right spot.
So if there are any photographers or DSLR video guys that shares my frustrations, I recommend getting a grip on your camera. There are plenty of resources out there on this subject. There’s this guy, and these guys, don’t forget this guy either. Also I’ve added a video from Caleb Pike of DSLR Video Shooter where he explains why it’s essential to have one.