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Tokina 95mm Cinema PRO IRND 1.5 Filter - 5 Stop
The Tokina 95mm Cinema PRO IRND 1.5 Filter - 5 Stop works to stabilize the transmittance of color throughout the visible spectrum. This filter includes an ND vapor deposition coating on both sides of the glass creating a high precision, truly neutral filter. Precisely control the amount of light entering the lens without affecting the color.
Most of today's high-end cinema cameras do not come equipped with a built-in low-pass or IR cut filter since they try to mimic the human eye and receive as much data as possible from the image subject. The more sensitive cameras are to light, however, the more exposure needs to be maintained using a stronger ND filter which in turn creates infrared pollution. To alleviate this issue, many camera manufacturers recommend the use of an IRND filter, even though many of the IRND filters on the market today have adverse side effects that come along with them such as color shifting. In addition to this, after adding or replacing an IRND filter, the white balance needs to be adjusted to maintain true color fidelity, which can quickly become too much work. In the end, the benefit of cutting infrared pollution doesn't seem like much of a benefit considering the need to continually white balance during a shoot and then correct color shifts in post.