Hey guys we go hunting every Saturday and Im taking my camera for the first time. I have a Canon 30d. I have a 70-210 mm lens so I think i should get some good shots. When should I use my polorizing filter? Dawn, noon, and Dusk? or just1 or 2 of the 3? (The sky will be included in all of the pics and I like when the skky pops out) Also, tthe woods will be kinda dark. Is it better to overexpose the sky or underexpose the foreground (where the deer will be)? (I am shooting in RAW and will be doing post editing) What should be the minimun shutter speed for a deer traveling at about 20 MPH and my zoom at about 150 mm? Im guessing 1/1250? ANY OTHER TIPS FOR THE SHARPEST AND MOST COLORFUL AND BRIGHTEST IMAGES ARE APPRECIATED. PLEASE HELP ME OUT LOL, I AM GOING OUT AT 5 IN THE MORNING! Thanks!