4x5.65" Hot Mirror ND Glass Filter

Price: USD $299.00

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Key Features:

Reduces the amount of infrared light which makes it to the sensor, thereby negating aberrations and colour shifting
30 layer coating technology ensures high IR wavelength reduction accuracy
Also serves as an ND filter allowing for greater control over exposure settings: the filter reduces the amount of light entering the lens, thereby allowing for the use of a wider aperture or longer shutter speed than normal
Ideal for use outdoors or other situations where both visible light levels and IR light pollution is high

Specifications:

Filter Type: Neutral Density & Hot Mirror (reflects away infrared light) combination filter
Infrared Light Transmission: below 5% transmission between ~ 730nm and 1300nm wavelengths
ND Density: 0.3 (1-stop), 0.6 (2-stop), 0.9 (3-stop), 1.2 (4-stop), 1.5 (5-stop), or 1.8 (6-stop) (select from product options)
Focal Length Range: up to approximately 70mm for full frame 35mm (not recommended for telephoto)
Size: 4x5.65" (101.6 x 143.5mm)
Thickness: 4mm
Material: Glass

Effect Description:

The Hot Mirror filter reduces the amount of infrared light entering the lens while having no affect on the wavelengths of light in the visible spectrum. Digital sensors are especially sensitive to IR light, which can cause aberrations and colour shifting in the image. The hot mirror filter is especially useful when using a neutral density filter because the ND filter will increase the ratio of IR light to visible light. The Hot Mirror ND filter accomplishes both tasks in one combination filter, freeing up an extra filter stage in your matte box. Cavision's 30 layer coating technology ensures high IR wavelength reduction accuracy.

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