Hello hello! I was wondering...I want to take some portraits on my digital and I am curious as to which is a better lens- one with a zoom or just a prime lens? What do you recommend? Also, I'm looking into getting other lenses for my Pentax K100D and don't have the money to buy new digital lenses so I was, again, curious as to what film SLR lenses would be best to use for taking portraits on my digital? Also, what about wide angle photos in the same scenario (film lens to digital camera)? Any help would be appreciated! Thanks!