Introducing Filter Kits for the GoPro Hero 3+. This Replacement Kit allows the active GoPro Hero3+ user to use and abuse their favorite filters without the need to repurchase a full kit. This kit includes 10 ND 1.2 filters but is also available in 0.6 and 0.9 densities. The rolling shutter effect is caused by the extremely short shutter speed of the GoPro Hero 3+ camera combined with shaking or movement of the camera. The result is video that appears to jiggle like jello. Using a neutral density filter lengthens the exposure time sufficiently to eliminate the effect and significantly increase the video quality. Please note these filters will only work with the Formatt-Hitech GoPro Hero 3+ holder, which can be purchased separately.