For Haida 100 or 100-Pro Filter Holder | 16 to 2.8x Filter Factor, 4- to 1.5-Stop | Reduce Exposure for Sunrises or Sunsets | Increases to Maximum Density at Center
For Haida 100 or 100-Pro Filter Holder | 8 to 2x Filter Factor, 3- to 1-Stop | Reduce Exposure for Sunrises or Sunsets | Increases to Maximum Density at Center