I've seen some things online claiming that an ND filter helps eliminate Jello. I'm wondering if there's any truth to this, as it seems to go against the physics of what causes jello in the first place... The GoPro has a CMOS sensor - as a frame of video is recorded, that sensor doesn't grab a full image instantly - instead the sensor is read from top to bottom - then that info is stored as a frame of video. Of course, at 60fps, this happens very quickly - but any vibration that happens while the sensor is being read will result in Jello. People have been saying to use high frame rates with the GoPro because a higher frame rate forces the sensor to read faster - allowing less time for the vibrations to affect the image. The purpose of the ND filter is to trick the GoPro into thinking it needs more light - so the amount of time the shutter stays open is increased. I don't see how this trick will do anything to eliminate Jello - logically, it could seem to cause more jello because the shutter is open longer and more vibrations would happen during that exposure. The only benefit that would make sense is that sometimes when flying toward the sun, I get propeller shadows over the image and it looks similar to jello. An ND filter might help eliminate these shadows - but so would a lens hood. So what am I missing here? I've seen some extraordinary video samples from companies selling these ND mounts, but my feeling is they weren't honest in the examples.