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The Singh-Ray 58mm Thin LB (Lighter, Brighter) Warming Circular Polarizer Filter can be applied to create a warm cast over an entire image while helping to reduce 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.
The Singh-Ray 58mm Thin LB (Lighter, Brighter) Warming Circular Polarizer Filter's warming effect can be obtained under daylight when this filter is used on a film camera system with daylight film installed, or on a digital camera system with its daylight white balance setting selected. Optical glass within a thin, 4.8mm aluminum-alloy ring that minimizes the potential for vignetting is used for the construction of this filter. Its coloration corresponds to an ability to reduce 3400K color temperatures to 3200K, which reflects a mired shift value of +18 that can be applied to other starting color temperatures as well.
Helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface
Can add a warm cast over an entire image when used on a film camera system with daylight film installed, or on a digital camera system with its daylight white balance setting selected
Polarizing filters arrange, and filter, directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of the light
Clears up haze in distant landscapes and provides more saturated, vivid colors
Strongest polarization effect when used at a 90° angle from the sun
Circular polarizers are ideal for use with digital cameras and autofocus lenses where a linear polarizer will often disrupt auto exposure and focus features
1.5x filter factor reduces exposure by two-thirds of a stop
Constructed from optical glass for clarity
Lightweight, durable, and thin aluminum-alloy filter ring
Leatherette pouch with microfiber interior for storage and transport