The Schneider 4 x 5.65" True-Cut 750 IR Filter is a specialized filter primarily used in digital cinematography to control infrared light. When shooting video with CCD or CMOS cameras, it's common to use multi-stop neutral-density filters to maintain proper exposure. These filters help compensate for increased light levels when you open the camera lens's aperture…
The Schneider 4 x 5.65" True-Cut 750 IR Filter is a specialized filter primarily used in digital cinematography to control infrared light. When shooting video with CCD or CMOS cameras, it's common to use multi-stop neutral-density filters to maintain proper exposure. These filters help compensate for increased light levels when you open the camera lens's aperture to achieve a shallower depth of field. However, as you use multi-stop ND filters to reduce visible light, they also permit more infrared light to pass through. This can lead to undesirable color shifts, especially in dark areas like shadows.
The Schneider 4 x 5.65" True-Cut 750 IR Filter is designed to address this issue. When combined with multi-stop ND filters during digital recording, it initially blocks 50% of infrared light at 750 nanometers and gradually eliminates it. By doing so, it restricts the light reaching the sensor to the visible spectrum, ensuring color accuracy throughout the frame and preventing or minimizing potential infrared color shifts. There's also a True-Cut 680 IR filter available, which starts blocking 50% of light at 680 nanometers, for cameras that require even greater infrared control.
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