It roars and roars and rushes (with Nikon D7100)

I bought this mic to get sometimes short interviews or sample recordings (orchestra) in good quality. Actually, I was quite satisfied with the internal Mirko the Nikon D7100, but thought that it would certainly go better.

Far from it: The ME-1 delivers in comparison with the internal micro substantially poorer sound quality, when suddenly a strong noticeable ambient noise can be heard. There are a small cog in the micro, which allows you to switch between two modes (Flat / L-Cut). I have received several test series and can not really see any difference between the two.

Well, maybe I'm doing something wrong and see the camera menu a crucial setting Maybe yes a call to Nikon provide enlightenment.