<p>I recently went through a 6hr tutorial (three 2 hour videos) on DSLR video shooting. Actually using autofocus when shooting with a DSLR was not recommended. They demonstrated something called "follow focus" where you focus as the subject moves and you also do not use a shallow depth of field. (There are actually follow focus rigs that are commonly used to do this....hard to do by hand.<br>
That being said, some of the new video oriented DSLRs (such as the Panasonic GH4) have auto focus that might be OK for video.<br>
Another thing, especially if he's doing tutorial videos is sound. The recommendation is to have a separate recorder and sync them in post (that's what Clap boards are used for...but a hand clap will do) and of course a microphone (some of the external recorders had good mics on them.) a small clip on mic can be had for < $30. If he doesn't wish to get a recorder a mic plugged into the camera (and hence replacing the internal (lousy) mic should work. My camera doesn't have a mic in so for me this way is not an option. Remember for a tutorial the audio might even be more important than the video.<br>
Finally don't forget about light..although I noticed my D3100 doesn't appear to need as much light in video mode as in still.<br>
Hope this helps!</p>
