Neutral Density Filter ND8 FPV for Gopro HD Hero4 Hero3+

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Our Price: $44.99

Manufacturer: RageCams
Model: RC-ND8FPV

Features and Description
This item when ordered all by itself has a shipping charge of $12.00 for all international shipping first class mail unless you specify a different service, please contact us before ordering if you would like this option.

Weighs only 0.2 oz & will not affect your gimbals operation.

BRAND NEW POLYCARBONATE ND8 3 STOPS ND FILTER COKIN BRAND NEUTRAL DENSITY FILTER MODIFIED MADE IN THE USA CUSTOM SLIP ON FILTER FOR HERO3, 3+, & 4 NAKED CAMERAS.

ALLOWS THE STRAP OF YOUR GIMBAL TO FIT SNUG AGAINST THE LENS BEZEL AS THE NEW FILTER WE SUPPLY LEAVES A GAP AT THE BASE WHERE THE LENS BEZEL MEETS THE CAMERA BODY, SO ITS PERFECT FOR FPV USE FOR USE ONLY OUTSIDE THE WATERPROOF CASE FOR FPV APPLICATIONS. SUPER LIGHTWEIGHT & PUSHES ON FOR A TIGHT HOLD. USE ON SUNNY DAYS TO MAKE THE COLORS MORE RICH & PREVENT PROP, GLARE FROM THE SUN OR ON WATER. REDUCE THE JELLO EFFECT THAT GOPRO IS KNOWN FOR.

IF IT GETS DIRTY, SIMPLY CLEANS UP WITH WATER ON A CUE TIP JUST LIKE YOUR STOCK LENS.

PLEASE NOTE THAT YOUR VIDEO WILL HAVE DARKENED CORNERS IF USED IN SUPER WIDE MODE. ITS NOT GOOD FOR FPV TO USE SUPER WIDE MODE OR EVEN THE STOCK GOPRO LENS IN THE PROFESSIONALS OPINIONS.

YOU MAY WANT TO UPGRADE TO OUR 5.4MM OR 4.2MM RECTILINEAR FLAT LENS FOR DSLR LOOKING RESULTS USING GOPRO CAMERAS. OUR FILTER CAN BE USED WITH MANY OF OUR AFTERMARKET LENSES ALSO.

In photography and optics, a neutral density filter or ND filter is a filter that reduces or modifies the intensity of all wavelengths or colors of light equally, giving no changes in hue of color rendition. It can be a colorless (clear) or grey filter. The purpose of a standard photographic neutral-density filter is to reduce the amount of light entering the lens. Doing so allows the photographer to select combinations of aperture, exposure time and sensor sensitivity which would otherwise produce overexposed pictures. This is done to achieve effects such as a shallower depth of field and/or motion blur of a subject in a wider range of situations and atmospheric conditions.

For example, one might wish to photograph a waterfall at a slow shutter speed to create a deliberate motion blur effect. The photographer might determine that to obtain the desired effect a shutter speed of ten seconds was needed. On a very bright day, there might be so much light that even at minimum film speed and a minimum aperture, the ten-second shutter speed would let in too much light and the photo would be overexposed. In this situation, applying an appropriate neutral-density filter is the equivalent of stopping down one or more additional stops, allowing for the slower shutter speed and the desired motion-blur effect.

The use of an ND filter allows the photographer to use a larger aperture that is at or below the diffraction limit, which varies depending on the size of the sensory medium (film or digital) and for many cameras, is between f/8 and f/11, with smaller sensory medium sizes needing larger-sized apertures, and larger ones able to use smaller apertures. ND filters can also be used to reduce the depth of field of an image (by allowing the use of a larger aperture) where otherwise not possible due to a maximum shutter speed limit.

Instead of reducing the aperture to limit light, the photographer can add a ND filter to limit light, and can then set the shutter speed according to the particular motion desired (blur of water movement, for example) and the aperture set as needed (small aperture for maximum sharpness or large aperture for narrow depth of field (subject in focus and background out of focus)). Using a digital camera, the photographer can see the image right away, and can choose the best ND filter to use for the scene being captured by first knowing the best aperture to use for maximum sharpness desired. The shutter speed would be selected by finding the desired blur from subject movement. The camera would be set up for these in manual mode, and then the overall exposure then adjusted darker by adjusting either aperture or shutter speed, noting the number of stops needed to bring the exposure to that which is desired. That offset would then be the amount of stop needed in the ND filter to use for that scene. Neutral density filters are often used to achieve motion blur effects with slow shutter speeds

Examples of this use include:

Blurring water motion (e.g. waterfalls, rivers, oceans).

Reducing depth of field in very bright light (e.g. daylight).

When using a flash on a camera with a focal-plane shutter, exposure time is limited to the maximum speed—often 1/250th of a second, at best—at which the entire film or sensor is exposed to light at one instant.

Without an ND filter this can result in the need to use f8 or higher.

Using a wider aperture to stay below the diffraction limit.

Reduce the visibility of moving objects

Add motion blur to subjects

Extended time exposures

Neutral density filters are used to control exposure with photographic catadioptric lenses, since the use of a traditional iris diaphragm increases the ratio of the central obstruction found in those systems leading to poor performance.

ND filters find applications in several high-precision laser experiments because the power of a laser cannot be adjusted without changing other properties of the laser light (e.g. collimation of the beam). Moreover, most lasers have a minimum power setting at which they can be operated. To achieve the desired light attenuation, one or more neutral density filters can be placed in the path of the beam.

Large telescopes can cause the moon and planets to become too bright and lose contrast. A neutral density filter can increase the contrast and cut down the brightness, making the moon easier to view.

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