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[For Sale] ND4, ND8, ND16 for P4 - $60

Discussion in 'Classifieds' started by Chris Stiles, Sep 12, 2016.

  1. Chris Stiles

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    I am selling my ND filters for the DJI Phantom 4: ND4, ND8, ND16 (2, 3, 4 stops of light reduction). I used one of the filters one time, so they're essentially brand new. These are genuine filters made by DJI - Excellent quality and will work with your stock gimbal guard. $50 shipped to the CONUS....? Make me an offer I guess. =)

    Pictures: DJI Neutral Density filters for Phantom 4
     
    #1 Chris Stiles, Sep 12, 2016
    Last edited: Sep 14, 2016
  2. Chris Stiles

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    Price drop to $50 shipped.
     
  3. tml4191

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    Do these work for the Phantom 3 pro? Also, when do I actually switch from let's say 4 to 16? How do I know that I need to switch?
     
  4. Chris Stiles

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    I think that the threads are just slightly different between the cameras of the P3 and P4 unfortunately =/.

    The point of ND is to achieve a proper exposure without having to adjust shutter speed. The general rule of thumb for shutter speed is to double your framerate (if you're shooting 24fps, leave your shutter at 1/50). This is the equivalent of having a 180* shutter angle on a film camera. Any narrower of an angle (faster shutter speed) and your footage will begin to look jittery (think Normandy beach scene from Saving Private Ryan). For aerials the effect will be more subtle, like weird stutters in the ripples of a lake if you're flying over water.

    Normally, if you're shooting outside with your P3 pro, you would be forced to expose with your shutter speed: The lens' aperture is at a fixed f2.8, and you can't go any lower than ISO100, so you have to jack up the shutter speed and deal with stuttery footage. But with Neutral Density, we've just given ourselves another tool to expose properly.

    To specifically answer your question, you'll want to choose the strength of ND filter based on what will properly expose your shot when you keep your ISO at 100 and your shutter speed at 1/50 (or 1/60 if shooting 30fps, 1/120 if shooting 60fps, etc.).

    I find that ND16 (4 stops of light reduction) is perfect for clear sunny days. Sometimes I wish I had a ND32 (5 stops) when it's been really bright. ND8 and ND4 I will need if I'm shooting in heavy overcast or close to a sunrise/sunset.

    A trick I use to pick the right ND filter is to fire up the drone with no filter on, find proper exposure with the shutter speed, and then figure out how many stops over I am. Example: My shot is perfectly exposed at ISO100 and 1/400 shutter speed. 1/400 is three stops of light over where I want to be (1/50->1/100 = 1 stop, 1/100->1/200 = 1 stop, 1/200->1/400 = 1 stop). Therefore, the ND8 filter is perfect! I throw that filter on, put my shutter speed back to 1/50, and I'm good to go.

    Sorry if I'm more confusing than anything else, hope that helps =)
     
    tml4191 likes this.
  5. tml4191

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    Thank you! Do you even use the stock uv fiter? With your explaination it seems like nighttime is the only proper scenario. Are you simply saying that the more sunny it is outside, then the higher the ND?
     
  6. tonyt76

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    Chris i'll take them, PM sent
     
  7. Chris Stiles

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    I do use the stock ND filter for early sunrise flights or after the sun has set (which, according to FAA part 107 I won't be allowed to do that anymore =/) And yes, the brighter it is outside, the stronger ND filter you use!
     
  8. tml4191

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    THanks!
     
  9. tonyt76

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    Chris are these still available?


    Sent from my iPhone using PhantomPilots