Hello! I am going to be shooting in snowy conditions for the first time, and I am feeling slightly overwhelmed. I've been doing some research, and it seems like manually overexposing 1-2 stops is the general consensus. What do you think? I plan on mostly shooting portraits of my family. I'm shooting with a Pentax K-1000, and I have 400 Tri-X, TMax, and HP5 to choose from. Which film do you think would serve the purpose best? And does anyone have any tips for metering? Should I meter on the subject then go up a couple stops from there? Thanks!