With a midrange bump and a natural bass roll-off, the SM58 delivers a tone that's tailored for vocal clarity. Bring the mic up close for a full, warm, and bass-rich presence, or pull it back to get a more natural sound with reduced low frequencies and minimal "s" sounds.
 
Point the SM58 toward your source and away from unwanted sound; its cardioid polar pattern rejects much of what's behind it, significantly lowering the amount of stage bleed, monitor mix, or background noise that gets picked up by the mic.