If you were to develop a short film, which one of these two cameras would you use? In a recent discussion with a friend he was claiming that a camera like the Canon 600d can produce videos of much better quality compared to a Sony PD170. Is he correct? Can somebody show me some evidence to support this (or the opposite)?
It's a little bit subjective. DSLR footage, straight off the camera, is very crisp and clean. Whereas a PD170 has a bit more of a 'video' look. So first off you'd have to decide what kind of look you wanted to go for.
In most cases you would choose to shoot on a DSLR, simply because the image is more visually appealing.
Pros of DSLR:
Pros of PD170:
For me, those are the main points. If you're looking to make a film cheaply, DSLR is the way to go. But don't forget about sound; good sound is integral to a film.