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The 55mm Blurfix3+ 55mm Filter Pack for GoPro Standard Housing is a bundle from Snake River Prototyping that features a special 55mm filter adapter for the HERO3+ Standard Housing. In the kit there are three filters, a polarizer used to cut unwanted reflections and enhance outdoor scenes, plus two strengths of ND: ND 0.6 and ND 0.9. Both of which are used to reduce light, the former by two stops and the latter by three stops. A Tiffen filter pouch is included to pack the filter, adapter, and O-rings all away in and keep them protected from scratches.
Note: The adapter is strictly for the HERO3+/HERO4 Standard Housing and will not fit the original HERO3 housing or the Dive Housing. It can be used with the HERO3 camera, however, if that camera is placed in the HERO3+/HERO4 Standard Housing.
BlurFix3+ 55 Adapter for Standard Housing
This special 55mm filter adapter is for the GoPro Standard Housing. It slips over the housing and leaves a completely sealed space between the housing and the filter. It can be used in three configurations: unsealed, sealed/air filled, and sealed/liquid filled
When used without one of the O-rings, the BlurFix3+ 55 acts as a "wet filter" adapter. Holes at the top and bottom of the filter allow the space between the filter and housing to flood. This configuration is commonly used during dives with a color-correction filter. It's also the easiest configuration to use on land when rain, mud, or snow intrusion is not probable
Sealed / Air Filled Use
In environments where rain, mud, or snow may be forced between the filter and camera housing, the space between the housing and filter is best off sealed
Sealed / Liquid Filled Use
Trapping liquid between the filter and housing makes the adapter nearly impossible to pull off since it is held in place by hydraulics - liquid does not compress under pressure. This configuration is ideal for surfers since water is readily available and fogging is not an issue in a fluid filled space
55mm SRP Circular Polarizer with Multi-Coating
Helps cut glare and unwanted reflections from glass, water, snow, and other glossy or reflective surfaces. It can also make clouds stand out against a blue sky by increasing contrast and is considered to make bright outdoor scenes appear more vivid overall. Multi-coating helps reduce ghosting and other artifacts that can lower contrast and soften the image
Note: Because the effect of polarization changes depending on how light strikes the filter, the effect may fluctuate if the camera or reflective object is moving
55mm Tiffen ND0.6 and ND0.9 Filters
These custom filters from Tiffen feature a slim profile to avoid vignetting that might otherwise occur because of the GoPro's ultra-wide angle lens. They are ideal for cutting light in bright outdoor scenes, enabling the camera to use a lower shutter speed for more natural motion blur and helping to reduce the appearance of the "rolling shutter" effect. The ND0.6 cuts light by two stops while the ND0.9 cuts it by three
In the Box
Snake River Prototyping 55mm Blurfix3+ 55mm Filter Pack for GoPro Standard Housing