Canon Rebel T2i Quick Start Manual page 102

Using Other Microphones
• The built-in microphone on the Zoom makes a good clean voice recording,
especially when placed very close to the speaker ( 1 to 2 feet, .3 to .6 m).
• However, the audio file can be quite thin sounding in comparison with other
microphones. The low frequencies are not very present and there is also a sense
of space from the stereo XY pair. This is not an "intimate" recording where you
have the sense of someone speaking directly to you.
• If this is what you desire, the Shure SM 58 and Sennheiser AVX clip-on
microphone can provide that type of recording.