I apologize if this question has been posted before. I have been requested to take pictures of a social event that will take place in a pub/restaurant. I won't have the possibility to arrange formal shots, 99% of the pictures will be candid ones. My idea is to use B&W film (Rollei Retro 400s), my AF SRL (Nikon f100) and flash (SB 28), and a little overexposure because the place has white walls that tend to deceive the light meter. In order to improve the look of my pictures, should I have to consider using also a filter, I have no experience of people pictures with B&W, I shoot mainly slides and some B&W for landscapes. Thank you!