The BlurFix Air with ND4 Filter combines a lightweight slip-over
filter frame for the GoPro® Hero3/3+/4 with a professional grade neutral
density 8 (ND8 or ND0.9) filter. The BlurFix Air Filters from Snake
River Prototyping are the lightest filters available for the
Hero3/3+/4 - each filter weighs only 7.6 g, or 0.27 oz! The BlurFix Air
slips over the Hero3/3+/4 lens body (no housing) and are intended for
ultra-lightweight camera platforms (i.e. quadcopters and other aerial
radio control aircraft).
Each BlurFix Air is made from two CNC machined Delrin® pieces so that
the filter frame can be disassembled to facilitate easy cleaning of the
filter glass. Delrin, which is more costly than billet aluminum by
volume, was selected because of its high quality and excellent machining
qualities.
The Hero3/3+/4 lens body can vary slightly from camera to camera. To
insure a good fit, each BlurFix Air includes an optional o-ring that
can be installed in a groove on the inside of the BlurFix Air body.
