I have recorded John Pill playing the guitar track to the song Yesterday, using two Rode NT2A microphones. The microphones are useful for recording acoustic guitars because they have a wide frequency response allowing for the effective pickup of higher and lower frequencies, this was furthered by the microphone placement.
I used a spaced pair placement with both NT2A's equidistant from the guitar, one positioned towards the 12th fret of the guitar, and the other nearer the base of the guitar. I did this in order to pick up both the lower, deeper frequencies from the microphone at the sound hole, and the higher frequencies from the picking and strumming from the microphone at the 12th fret. I did this because the distance that the microphones were from each other also worked effectively with this placement, because if the microphones were further apart, it would have resulted in a thin, quiet sound, and if the microphones were to close, the sound could have been too loud or have picked up constructive phasing from one another.
Much like the vocals, I have recorded the guitar tracks onto tracks 1 & 2 on an eight track tape recorder, to emulate the vintage sound created by the Beatles and other popular musicians of that era.