The numbers refer to the density of the lenses, the higher the number the darker the lens. An ND4 you would typically use a ND4 on bright cloudy days, an ND8 around midday on a partial sunny day, an ND 16 on really bright sunny days. There are higher rated lenses but all depends on what you wantI guess what I am asking is what does the different numbers mean like ND-4 compared to a ND-8 and so on? I am looking at the model# P4-1203 from polar pro
yesWhat about the polarized part is it worth the extra money for the polarized filters
YesWhat about the polarized part is it worth the extra money for the polarized filters
Msinger post a helpful chart 3 posts down. However if you are unfamiliar with "stops" I will explain as it applies to the Phantom 4 with a fixed aperture lens. Assuming NTSC (North America) Video, It is more or less ideal to use a shutter speed that is the reciprocal of twice the Frame rate so that you get the expected smooth motion blur. This means if you are using a frame rate of 30fps you would ideally use a shutter speed of 1/60 of a second. DJIGO just calls calls it 60. So for example if the exposure with out a ND filter is 1/240 you would uses a ND4 to reduce the light by 2 stops (240 to 120 is one stop 120 to 60 in the second stop) if the reading is around 1/480 you would use a ND 8 for 3 stops. If the no filter exposure is around 10000 (typical for a bright midday ND 16 would be appropriate. I hope this helps.I guess what I am asking is what does the different numbers mean like ND-4 compared to a ND-8 and so on? I am looking at the model# P4-1203 from polar pro