ExpoDisc v3 Professional White Balance Filter Size:82mm The ExpoDisc is tested by

The ExpoDisc is tested by hand on a transmission spectrophotometer to ensure its neutrality

Printed Instructions (English)

check out Rob Shea's terrific "How To" instructional video

The improved performance of the new materials extends beyond the visible spectrum from 700-2200nm (near infrared)

and the resulting custom white balance calibrates the camera to an exact color temperature at image capture

ExpoDisc v3 Professional White Balance Filter Size:82mm The ExpoDisc is tested bySave Time Editing Color Use the ExpoDisc to set a custom white balance directly in your camera. This measured white balance is baked into JPEGs and applied as the 'as shot' white balance in RAW files so every image comes out with accurate, neutral color from the start. No more adjusting sliders for every photo in post production. Simplify your workflow No additional software, plugins, or post processing steps needed just accurate color, every time.