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- Set custom white balance, meter for exposure and dust map your sensor with the only calibrated and certified 18% transmission incident light metering filter.
- To Use: Simply place the ExpoDisc in front of your lens and capture the incident light while setting your camera’s custom white balance
- ExpoDiscs are individually calibrated to transmit 18% light
- Save valuable time in photo editing software
- Can securely attach to equivalent 77mm lens filter threads
- Can be used on cameras with smaller filter size lenses. Simply hold the ExpoDisc over the lens during the white balance procedure to capture the reference gray frame.