I've been trying to get this game for a while, I loved Pokémon Snap and this is the closest equivalent to it I know of. You are a wildlife photographer, set up camp on the African Savannah. You must drive around taking photo's of the various wildlife, as well as taking part in missions requiring you to take specific photo's, such as an animal taking part in a mating ritual. There are 100 odd missions in all with around 50 different animals. The photography is very true to real life, with varying lenses, you are even able to change the settings, such as exposure. It even comes with a field guide, with a library of National Geographic footage to help you learn about the animals you find.
There are some minor issues: There is no fast travel, you have to start from your base camp each time and drive to the next destination, some animals won't appear on certain days, and a glitch that makes you unable to use a trap camera. Also there was another issue I had, which isn't the games fault: There are about 9 different types of antelope in the game including: Gazelle, Impala, Oryx, Dik Dik, Waterbuck, Topi etc, and they all look the same from a distance which made finding a particular species difficult to find. There is another big issue: The game was never released in Europe, I don't know why, though it might have something to do with the large amount of product placement (In one mission you must drive your Suzuki Jeep, to take a picture with your Sony Alpha Series Camera, to take a photo of a lion with a crittercam™ around it's neck and hand it in to National Geographic), fortunately the PS3 doesn't have region locking on it, however the game is considered rare so finding a copy for a decent price can be hard, especially if you want the US Version so that the text will be in English.
Overall it was a great game, probably my favourite Photograph based game... not that I can think of many. Also the difference between completing the main story, and getting 100% of the acheivments, is 4 photo's, so it's an easy platinum.