Just picked up a Zoom H4n. I have made the decision to shoot sound separate, instead of running my shotgun mic into the Canon T2I. When I compared the difference, the sound recorded with the Zoom and shotgun was better when compared to the Canon and shotgun. Now I have another challenge, syncing sound. What are some things to keep in mind when recording sound separate? Are there any issues when you try to sync Zoom H4N audio to 1080 24p video.