I have Nikkor 50mm 1.8D (Filter Size - 52) and Tamron 28-75mm 2.8 (Filter Size - 67). I use the Nikkor mainly for portraits of people and animals. I use the Tamron mostly for general indoor/outdoor photography, landscape, buildings, just about everything. I have not idea what filter I should get.... Would a Circular Polarizer work best with my Tamron? Or would a Haze filter be better? Would I need a different filter if I want to shoot indoors with a flash? I am thinking CP or Haze with my Nikkor as well. What does OT recommend?