Polarizer filter is an available option when you purchase a ZED2i camera. This filter helps reduce glare and reflections and improves depth accuracy on reflective areas as well.
The polarizer reduces the incoming light by 40%, which is not an issue for outdoors applications given the very high illumination of natural environments. Indoors and in low light situations, this is compensated by Exposure and Gain, which introduces some blur and noise when there is not enough light.