The Hoya 67mm HMC 81A Light Balancing Filter is uniform in color and with a mired shift value of +18, can be applied to purposely create a warm cast over an entire image. This effect can be obtained under daylight when this filter is used on a film camera system with daylight film installed, or on a digital camera system with its daylight white balance setting selected. The Hoya 67mm HMC 81A Light Balancing Filter is also useful for balancing light sources with a color temperature of 3400K for t