Lining up your audio in the editor when in post with you footage and separate audio can sometimes be a hassle for some folks
Using a slate to mark sound for a take is a must when using a DSLR and recording dual-system sound. In the studio here we just look for the click of the slate board in the audio line and line up the audio with the video clip, which has never been a problem. One program, Final Cut X has a audio sync feature that will line up your audio with the video footage but many of the other editing programs do not.
Sometimes you may end up using many camera’s for a shoot with lots of data and sound. If you are in a time crunch to get a edit out you may want this cool tool, PluralEyes 3. Many editors use this program and I think it can be useful in a time crunch.