After shooting a few projects with the BlackMagic Design URSA Mini 4.6K camera, I found several that I could sometimes get away with just the audio from the built in microphones. But as soon as I threw on my Canon EF-S 17-55mm F/2.8 lens with Image Stabilization (Ursa is not full frame), the camera microphones would pick up all of the IS noise. Once that noise was embedded into the audio, it was no longer usable. So I set out to find a good microphone that I could mount over the handle.
I personally wanted the shortest shotgun microphone, powered over XLR phantom so I didn't have to worry about batteries. I wanted to find the slimmest shock mount so it didn't sit too high (trying to keep the camera clean and simple). It didn't need to be the best microphone in the world, as I was only planning to use it mostly on camera for good scratch audio or sound bites. After reviewing a few options I found the Azden SGM-PDII to be a good fit and has excellent customer reviews. Over at B&H they have an Azden SGM-PDII Shotgun Mic Kit that includes the shock mount, and the microphone already comes with a short XLR lead.
Running through the tests mounted on camera, the SGM-PDII was completely free of any Image Stabilization noise from my lens. So for my on-camera needs it works great. And surprisingly I found the microphone also sounded very good when booming overhead, so it's something I would even use during interviews. If you're working with a camera that has built in XLR inputs (i.e. Sony FS7) and looking for something better than the built in microphones, you may want to take a look at the Azden SGM-PDII Short Shotgun Microphone.