"ExpoImaging Inc., the pioneer in diffusion filters that allow professional and consumer photographers and videographers to quickly color balance at capture, today announced that its ExpoDisc Digital White Balance Filters are now available for purchase in more than 300 Ritz Camera and Image stores nationwide, as well as through the Ritz Camera Family of Wolf Camera, Kits Camera, Camera Shop, Inkley’s Camera and the Ritz Interactive e-Commerce sites. As part of an aggressive campaign to significantly increase its photographic lighting equipment and digital camera accessory offerings, Ritz Camera has chosen to carry the ExpoDisc, a custom white balance filter that enables digital photographers to improve their color by setting a custom white balance without having to carry, hold, position, or fumble with any of the numerous gray cards, white cards or targets."The snap-on ExpoDisc is suitable for use with any digital still and video camera with a custom white balance function, including digital SLR and fixed lens prosumer cameras. There doesn't appear to be any word on pricing right now.