lido_bmt
lvl.2
Flight distance : 87772 ft
United States
Offline
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As aopisa said, if you're taking photos, filters are mostly useless as you can compensate with shutter speeds to get the correct exposure unless you're shooting directly into the sun. Some people will tell you a polarizer is useful, but I don't find them useful on UAVs as you can't rotate them easily to fully utilize their effects.
ND filters are extremely useful for video. If you're shooting video and don't want to get that highly digitized look due to extremely high shutter speeds, they're pretty much a requirement. The most popular seem to be the DJI filters and Polar Pros, both of which don't seem to have much in the way of color tints to them (a good thing). Note that DJI does not have any ND32 filters, which you may need if it's extremely bright out. Polar Pro has one but it's polarized, which isn't optimal. Neweer does make a straight ND32 filter that seems ok, but I haven't used it much yet.
If you're not familiar, shutter speed stops go 1/60, 1/125, 1/250, 1/500, 1/1000, 1/2000. Filter nomenclature is for ND2 to reduce exposure by one stop, ND4 to reduce by two stops, ND8 to reduce by 3 stops, ND16 to reduce by 4 stops, and ND32 by 5 stops. If you want a 1/60 or 1/50 shutter speed on a snow filled sunny scene where proper exposure is at 1/2000, you're going to need the ND32. A cloudy day would be around 1/250 or maybe 1/500, so you'd need a ND2 or ND4. Snowy backgrounds on cloudy days are usually still pretty bright, around 1/1000, so you're going to need an ND16. Etc etc; all situations are different. You have to meter the scene and apply the right filter. |
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