Hello all. I am new to the photography scene and I have a question. I bought a Nikon D5100 to record and take pictures of my daughter in marching band and her band competitions on football fields. My question is, which lens do I need to buy to be able to get the best picture and video quality without breaking the bank? I will be towards the top of the bleachers which is not very far away in a high school stadium. I was thinking a wide angle lens would work, but as I learn more, I think I am wrong. Any help would be greatly appreciated. Also, wondering where I might find a microphone for this camera that would be to sit at the bottom at the stands and record the band to my camera as I record the video. Trying to block out the noise of the people in the stands. Thanks in advance.