If you're asking about a solar filter for the eclipse, wide angle lenses don't need a filter because the sun is pretty small in wide angle. If you use a telephoto lens or look at the sun with your eyes, you need a solar filter. Any Baader solar film will work, you can find the solar film online but the eclipse is Monday so you may not have time. You can also find phone camera filters in many stores near the path of totality, you can possibly adapt those to a drone.