DJI Phantom 3 Filter ring, holds ND filter gels on existing camera.

thingiverse

This Neutral Density filter ring is designed for the DJI Phantom 3. Included is a 3D printed ring to hold the ND filters in front of the existing lens on the Phantom. This ring is designed for a 31mm diameter ND filter gel. Simply choose the ND filter/s that you need for the exposure you want and stack them against the Phantom camera and install the ring to keep them in place. Here is a YouTube video on how to use themhttps://youtu.be/0TbDhJvIUvA I am selling a pre-cut filter set for this thing on eBay.http://www.ebay.com/itm/-/272214170861? It includes: one 3-stop ND filter (3 stops darker) one 2-stop ND filter one 1-stop ND filter If you want to purchase a set already made you can do that on my website at www.ditzco.com. The darkest filter is 3-stops. On a bright overcast day in high sun this might be enough for 1080p/60. On a very bright day 4-stops is typical at 1080P. This would be the darkest filter (3-stops) and the lightest filter (1-stop). Because the max 4K frame rate is 30fps you will probably need to darken the image one stop when you go from 1080P to 4K. The shutter speed should be double the frame rate. For example: 1080P/60 = 1/120 second 4k/30 = 1/60 second 3D printed ring and one filter only weigh 0.7 grams. Instructions I made it with the default settings. Print the wider part of the ring down. It was created with OnShape.com If your filter ring does not fit please resize accordingly in your slicing software and print again. I have made over 3,000 of these rings and they do fit. They are sized perfectly for my MakerBot Gen3 clone with PolyMAX. Your millage may very.