I find it odd that there isn’t more said about the shortcuts available for the Zoom F4 and F8. They can really speed things up when you are on a gig. Unfortunately, without the use of the f control, the F4 cannot use a usb keyboard but these shortcuts make it so that for many of the necessary functions needed on a film shoot, you can operate just as quickly without the keyboard. Here’s a short video of what I consider the most useful shortcuts.