Cokin WA1T715 Filter Color Correction Magenta CC30

The Cokin WA1T715 is a CC30 Magenta color correction filter designed for the Cokin A Series modular filter system. Its purpose is straightforward: it selectively attenuates the green portion of the visible spectrum, introducing a calibrated magenta shift that neutralizes green color casts. This is particularly useful when shooting under fluorescent or vapor lighting, where the emitted light skews green in ways that can be difficult to fully correct in post-production, especially with film. The CC30 designation indicates a moderate correction density, positioned between subtle CC10 and heavy CC50 values in the standard color compensating filter scale.

As part of the Cokin A Series, this filter slots into a lightweight holder that attaches to lenses via threaded adapter rings, covering lens diameters from 36mm to 62mm. This modular approach means a single filter works across multiple lenses in your kit without buying duplicate screw-in filters for each thread size. The filter is recommended for focal lengths over 35mm to avoid vignetting. For photographers who work in controlled or mixed lighting environments and value getting color right in-camera, the WA1T715 provides a precise, repeatable correction that complements digital white balance rather than replacing it.