As filmmakers we tend to let little things bug us. Stuff that most viewers don't pick up on. Noise, moire, aliasing, rolling shutter and so on. A Cinematographer might not worry himself with audio on a bigger set since it is handled by a totally different department. However, most of us work alone or with a small team and we are forced to multitask.
If you are a multitasking filmmaker you have started to nitpick little things in the audio department as well and one of them is probably mic placement. It's always a struggle, from scene to scene. How close can you get the mic to your subject without it coming into frame, or casting a shadow, while still getting a good recording.
Most of the time we end up having to boost the volume in post which adds unwanted hiss to your audio track. I was doing an interview once and developed a technique out of necessity that helps solve this problem in certain interview settings. Obviously, it won't work for everything (unless you shoot against a green screen) but I find myself using it often when the situation is right. Check it out!
Audio Tip from Luke:
(cover photo credit: snap from another video Luke did)