I find the C300's timecode drift issues maddening. It's inexcusable in this era. Like many small cameras, The C300's TC drift contribute to a cascade of shortfalls that undermine reliable audio. Here's the cascade:
1. In hand-held non-fiction work, we often run wireless-to-camera. Like many mixers, I use a Zaxcom link. The C300 has no external 12VDC (Hirose) out, which means you power it internally and have to watch the batteries like a hawk.
2. There is no convenient place to mount the wireless receiver; all locations generate a whining noise which I've trianulated as coming from the camera person's mouth. But mounting options are:
-strapped in the outer portion of the camera's lens handle.
-Velcroed to the back of the LCD screen.
-box mounted on the bottom of the camera
-in a butt pack the camera person wears with a 4-foot duplex jumper.
3. The C300 fine-scale audio metering is directly below the eye piece, so when the camera person is shooting, you can't easily verify levels from your wireless link. Also, the metering backlight toggles off during every power-down, making it more difficult to read that microscopic LCD.
With all this in mind, here's the very real nightmare scenario:
You and the cameraperson jammed at the last location, then jumped in the car. The C300 battery was changed during the drive. You're rushing to the next scene and a stressed out producer has you jump out of the car and start shooting a street riot. You say, "Wait, we have to rejam!" The producer insists there's no time, tires are burning, police are arresting people. The lithium AA batteries just read "9" on the Zaxcom receiver in the car, so you're good to go. But the insidious discharge curve of lithium kicks in and, while you're booming 50-feet away, the batteries go flat. The camera person doesn't notice the meters are flat, because they're so focused on their shallow depth-of-field. But you're rolling back up audio files, so you're fine. Right? But's there's no sync.
This camera looks beautiful, but as a reliable ENG production tool, it's a clunker. It's just another toy camera that makes stunningly beautiful images.
If you have a C300 shoot, use a Deneke or Ambient box. Tell the DP before gear prep that both a wireless link and lockit will be on the camera. Ease them into it, like coaxing a puppy into the veterinarian clinic for the first time.