ExpoDisc 2.0 77mm White Balance Filter with:
ExpoDisc 2.0 Professional Digital White Balance Filter (77mm)
The ExpoDisc 2.0 White Balance Filter (77mm) is a calibrated, colored diffusion filter with a bias that forces the digital camera to add precise quantities of red and green color to a neutral balance. The filter is excellent for warming (or balancing) skin tones in indoor or outdoor portraits and scenery. It decreases color temperature; adds healthy skin tone to images shot in open shade or overcast conditions; slightly reduces the bluish cast on overcast days or at high noon; reduces excess blue from flash indoors or in daylight flash-fill; as well as warms sea, sky and high altitude shots.
The ExpoDisc 2.0 introduces user-selectable warming filters (gels), an improved mounting design, and a new lower price.
The ExpoDisc can effectively be used with step-up rings, so if you use lenses with varying filter size specifications you can buy one ExpoDisc for your largest lens and appropriate step-up rings for your smaller-diameter lenses.