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This B&H Kit includes the Hoya 52mm NDx400 HMC Filter and the Hoya 52mm Circular Polarizer (HMC) Multi-Coated Glass Filter. The neutral density filter in this kit allows you to reduce your exposure without having to make changes to a camera's shutter speed or aperture settings. The circular polarizer filter can be used to remove unwanted reflections from surfaces such as water or glass while increasing color saturation. These filters are multicoated to help reduce flare and improve light transmission.
The Hoya 52mm NDx400 HMC Filter is a solid ND filter with a 2.7 density and a 512x filter factor that provides a 9 stop exposure reduction. This filter creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. By slowing your exposure time or increasing your aperture, you are able to control depth of field and convey movement more easily. Neutral density filters do not affect the coloration of the image and are ideal for pairing with other filters.
The Hoya 52mm Circular Polarizer (HMC) Multi-Coated Glass Filter reduces exposure by 1.6 to 2 stops. It helps to eliminate reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges, and filters, this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.
A circular polarizer only differs from a linear polarizer in that it contains a quarter wave plane in addition to the linear polarizing filter. The addition of this quarter wave plane is to circularly polarize the linearly polarized light for the use of auto focus and exposure functions. Due to how the light is broken down and filtered with a linear polarizer, auto focus and exposure accuracy become skewed during use. When the light becomes circularly polarized, it permits the use of these functions.
Circular Polarizer - Light rays which are reflected become polarized. Polarizing filters are used to select which light rays enter your camera lens. They can remove unwanted reflections from non-metallic surfaces such as water or glass and also saturate colors providing better contrast. The effect can be seen through the viewfinder and changed by rotating the filter. The filter factor varies according to how the filter is rotated and its orientation to the sun.
Multicoated to minimize reflection at the filter surfaces which reduces flare and ghosting.
NOTE: Circular polarizers are specifically designed for use with auto-focus SLR cameras (They will also work on manual systems and video cameras without problems). Linear polarizers are used with most video and manual focus photo cameras. They are not recommended for auto-focus SLR cameras.
This filter eliminates ultraviolet rays to remove haze from outdoor shots as well as polarizing the light to remove reflections, and increase color saturation, without affecting the overall color balance
Hoya 52mm NDx400 HMC Filter
The Hoya 52mm NDx400 HMC Filter is a solid neutral density filter that enables a 9-stop increase in exposure length. The optical 2.7 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. By slowing your exposure time or increasing your aperture, you are able to control depth of field and convey movement more easily.
This filter features a three-layer HMC multi-coating, which provides 98-99% light transmission and helps to reduce internal flare and reflections. It is constructed from high-quality optical glass for notable image clarity and is set in a durable aluminum filter ring.
2.7 ND filter darkens the image, allowing you to photograph with a slower shutter speed or wider aperture than normally required.
Providing a 9-stop reduction, this filter allows you to control depth of field and convey movement more easily.
Three-layer multi coating helps to minimize internal reflections and ghosting and maintain an overall neutral color balance.