A big thing about large format is that you can tilt your lens and change your plane of focus so you get everything sharp in your landscape photographs. Yes, it does take a little longer to set up a view camera but most people (including me) feel that the extra time spent creates more "keepers" at the end of the day. Yes, a 4X5 folding field camera will easily fit into a backpack with plenty of room to spare. A lot of photographers hike with them.
Originally Posted by Jedidiah Smith
If you are interested in large format then check out the home page on the Large Format Photography Forum for a wealth of free information.