ExpoImaging ExpoDisc 77mm Portrait White Balance Filter for Digital Cameras

• Hand-calibration

• "Pop-on" design via three spring-loaded ball bearings

• 100% neutral diffusion

• Imitates both incident light or color meter

• Resulting 18% gray frame usable as white balance reference, exposure reference, or dust mapping reference

Here is how it works

• Fine tune color at point of capture

• Varying levels of colorcast typically occur in digital photography and require compensation as part of the process to create a photograph with good color fidelity; Until now, photographers have had to rely on gray/white cards to solve this problem

• ExpoDisc is an easy to use custom white balance solution that eliminates the inconvenience and inconsistencies of other methods; It is a neutral diffusion filter that gathers ambient light from 180 degrees and passively transmits 18% of it through to your camera's light meter; The resulting "gray frame" accurately represents the average colorcast of the light in which the photograph is taken.

• From this gray frame, you then can set a custom white balance that results in accurate color in most lighting conditions; Your camera effectively compensates for and neutralizes the colorcast it sees through the ExpoDisc "gray frame"

• Works in mixed, or difficult lighting conditions

• Replaces your gray and white cards

• Spend more time shooting and less on workflow

• It's convenient, fast and easy to use