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3x4" Hot Mirror Glass Filter - DISCOUNTED
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Price: USD $65.00 - ~40% Off! - No Returns
Item Number: FTG3X4HM
* Whole number only
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*Note: this is a discounted version; filter has some very small imperfections in the glass
*No Returns Accepted
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
- Ideal for use outdoors when also using an ND filter
Specifications:
- Filter Type: Hot Mirror (reflects away infrared light)
- Infrared Light Transmission: below 5% transmission between ~ 730nm and 1300nm wavelengths
- Focal Length Range: up to approximately 70mm for full frame 35mm (not recommended for telephoto)
- Size: 3x4" (76.2 x 101.6mm)
- Thickness: 2mm
- Material: Glass
Effect Description: The Hot Mirror filter reduces the amount of infrared light entering the lens (via reflection) 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. Cavision's 30 layer coating technology ensures high IR wavelength reduction accuracy.
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