50 MM: This lens is a prime-lens meaning it does not have any zoom, but it will focus for you. This lens is really good in low light and good for portrait photos.
85 MM: The 85 MM is another prime-lens, meaning it can't zoom in or out, but this lens is a MUST if your a looking to take good professional quality portrait pictures.
Kit lens: Kit lens normally always come with the camera you purchase, this is because it's a good all-round lens. Portrait, product and zoom it can do it all. Although this lens is good all-round it's probably not the best if you wanted to take money shots.
Wide angle: The Wide angle lens is a MUST if you want to take pictures of landscapes, this is because the lens can fit everything in the shot. The only downside is this lens can distort facial features.
Telephoto: Telephoto lenses are great for showing intricate detail, to zoom in on landscapes and grabbing images from far away.
See the gallery below for an example of pictures from each lens above.