The difference between Sanken CMS50 stereo microphone, 416 microphone and 418 stereo microphone.

MKH 418-S

MKH 418 S is an M-S format stereo shotgun microphone. Suitable for film, broadcast, and television interview environments, among others.

It is a high-sensitivity, low-noise microphone.

：Stereo

MKH 416-P48U3

MKH416 P48U3 is a compact and elegant interference tube microphone. Like MKH 418, the stable high-definition and feedback noise suppression capabilities make the MKH 416 a versatile microphone suitable for the film, broadcast, and television industries, especially for outdoor broadcasting.

：Mono

Sanken CMS-50

CMS-50 is a 5.4′′ compact stereo condenser shotgun. It is an M-S (Mid-Side) configuration which makes it possible to adjust the stereo width from mono to stereo at the mixer or in post production. The shotgun includes two outputs, a cardioid and figure of 8, which can be fed into the mixer for width adjustments. If both outputs are recorded then width can be managed in post. 

: M and S component outputs to compose Stereo signal