Not sure where to start. It is going to depend on the level of UV/IR sensitivity of your film and on a host of other factors to a lesser degree (e.g. clean filter?). I would guess that with, say Tri-X, it wouldn't have much effect, other than having another pane of glass between your lens and the world. If that film was sensitive to IR, you'd have a lot of non-imaging forming radiation fogging the film from heat absorbed by the camera. Since that has not been my experience, I wouldn't think that you'd have much image forming light in that part of the spectrum coming through the lens in any event.
For landscapes with a lot of mist/haze you might see an increase in contrast due to the UV cut features of the filter, assuming that it isn't offset by flare because of your light source hitting the filter itself.
Ben
Ben Marks
