●Create custom white balance settings almost anywhere ●Helps lens resist dust, debris, and bumps ●It allows digital photographers to quickly and easily set an accurate custom white balance ●Using this white balance filter to set a custom white balance results in consistently balanced color and eliminates many of the yellow, red and blue color casts commonly seen in digital photography ●This white balance filter is individually assembled, calibrated and certified for neutrality in the visible spectrum, and for 18% light transmission