ExpoImaging ExpoDisc Reference Manual for Digital Cameras - Manual (Page 4)

ExpoDisc Instruction Manual
v. 4.0. 05/06
4
Designed specifically for portrait photographers, the ExpoDisc Portrait Filter enhances
and accentuates healthy skin tones. Rather than producing an image file with neutral
whites, the Portrait filter first neutralizes, then enhances the whole image with a
warming effect. The ExpoDisc Portrait Filter effectively adds subtle, pleasing red tones
and highlights to the hair and skin.
1.d. Custom White Balance for Digital Video
The ExpoDisc is an excellent white balance tool for use with digital video cameras.
Simply install the disc and follow your camera’s custom white balance procedure. The
instructions for where to point your video camera are the same as for still cameras (see
section 1.h. Where to Aim Your Camera). You must set a different custom white balance
for each change in lighting.
1.e. Overview of How to Set a Custom White Balance with the ExpoDisc
Install the ExpoDisc on the end of the lens and follow your camera’s custom white
balance procedure to take an exposure or reading through the disc. A custom white
balance can easily be set in any of the auto exposure (AE) modes, such as the “P”, “S”, or
“A” mode, or in the manual exposure “M” mode.
Under most conditions it is best to aim the camera towards the light source, as if you
were using an incident light meter to take the exposure or reading through the
ExpoDisc. Set your focus to manual if your camera will not release the shutter with the
ExpoDisc installed. Save or select the exposure, or reading (‘capture’) for your custom
white balance setting. This procedure must be repeated for each change in lighting.
The following sections provide additional in-depth information about each of the steps
involved with setting a custom white balance using the ExpoDisc.
1.f. Installation of the ExpoDisc
Insert the ExpoDisc into the threaded recess in front of your camera lens with the plain
white side facing the camera. To remove the ExpoDisc, simply reverse this action.
1.g. Correctly Exposing the Custom White Balance Capture
Whether photographing in the manual exposure “M” mode, or one of the auto exposure
“AE” modes, the custom white balance capture should be taken with correct exposure
settings for the shot. Failure to do so may result in the inability to set a correct white
balance.
Your white balance capture will be automatically exposed correctly if you use the
camera’s auto exposure (AE) settings, such as the “P”, “S”, or “A” modes.
When using the manual exposure “M” mode, set the custom white balance with a
properly metered exposure. Shoot the custom white balance capture at the same
exposure setting as was metered for the shot.
1. Take an incident flash-meter reading (or equivalent) to get a correct exposure.