Update - I've upgraded to the C80, and will keep this post to this audio issue. The C80 handles audio so much more cleanly than the C70, the noise floor is minimal, and tests vs the Zoom are similar levels. I now don't need the Zoom. Whatever happene...
Yes I get exactly the same, there is a pretty terrible noise floor on the C70 whatever I adjust, dials, inputs, menu settings. Even with nothing plugged in. I've recorded the same environment with the Zoom F3 as a control for room atmos, and there's ...
Thanks for sharing all this info. Very helpful. Firstly, I cannot believe there is not more on this on the internet, or even more/easier solutions to this with the C70. Even from Canon. So in the spirit of sharing...I just have just bought the CameoG...