I've tried many of the third-party flat/c-log-like picture styles available, but they were either:
- much flatter than actual Canon log, making them harder to match to other cameras and grade
- skewing the colors in unnatural ways
- straining the 8 bit codec, leading to noise and artifacts
- leaving an artificial gray 'haze' over the footage, even after grading
That's why I decided to create a picture style for Canon mirrorless cameras that fit my requirements of matching Canon-log as closely as possible, retaining accurate color response (no reds turning purple), and minimizing degradation of the image.