Crutchfield Customer Review (What's this?)
The battery grip is a very nice addition to the camera. It has a solid feel and integrates well into the D610. The second battery is very useful but the main advantage of the grip is the vertical shutter button. My only complaint is not so much about the grip but the battery door on the camera body. It would be very nice to not have to unscrew the grip to charge the battery inside the phone. The grip itself is well made with tight tolerances and the battery tray slides in tight and is easy to operate.
Pros: - Greatly extends time you can do shoots without having to stop or fumble with changing batteries. - The vertical shutter release button makes life easier for taking vertical images. - Place built in to hold the rubber gasket that covers the connection on the camera so you won't lose it. - Looks cool and gives you a way to hold the camera firmly in the vertical position.
Cons: - Definitely adds bulk to the camera. Make sure your bag can deal with it. - Unless you do lots of vertical shots or need the extended battery the cost isn't really justifiable (unless its thrown in for free with the kit). - Annoying having to remove it every time you want to charge the primary battery in the camera. - Others might disagree but it could be heavier or a bit wider. With a standard zoom (24-85) the camera will lean forward and rest on the lens when put on a table.