I'm working on a short film project for my MFA that's looking at the use of lens flare filters in film. I was wondering if one you of you would be willing to do an interview over skype. I'm just curious to hear about how/why you decide to use the filter, what the effect your going for is and how you manipulate in a given shot.
Dave describes the use of lens flares as a design element. I think that gratuitous lens flares are certainly out of vogue right now, but subtle lens flares are still a useful tool for adding light or a sense of volume and realism to a design.
Lens flares are also valuable in compositing; if you're working new elements into a shot, it's important to be able to tie the shot together. Real lenses flare when there's a bright, visible light source in the shot, so compositing needs to include flares in those situations to feel real to the viewer.