- Capture Accurate Color
- Convenient, fast and easy-to-use
- Works in Mixed and Difficult Lighting
- Reclaim Time Spent Correcting Color
- Replace Your Gray Cards and White Cards
Recognizing the importance of custom white balance to good color, digital camera manufacturers have designed their cameras to take advantage of a custom white balance. A custom white balance calibrates the camera to the exact color temperature of light illuminating the subject.
The ExpoDisc is a custom white balance filter that allows digital photographers to quickly and easily set an accurate custom white balance. Consistently producing excellent results in natural, artificial, and studio lighting, the versatile ExpoDisc even excels in difficult mixed lighting environments.
The ExpoDisc is far easier to use than any gray card, white card or calibration target. Simply place the ExpoDisc in front of your lens and capture the incident light while setting your camera's custom white balance. Using an ExpoDisc custom white balance will virtually eliminate the need for RAW or JPEG post-capture color adjustments.
ExpoDisc technology takes a unique approach to setting a custom white balance and producing accurate color. The ExpoDisc essentially uses your camera's built-in custom white balance capability to turn the camera into an incident color-metering tool. This approach avoids the common problems and inconveniences associated with using gray cards, white cards and calibration targets: unwieldy size, unwanted reflectivity, improper angling and difficulty of filling the frame.
Each ExpoDisc is constructed of carefully selected and matched optical grade materials, then hand-calibrated to strict tolerances of color neutrality and light transmission.
The ExpoDisc is suitable for use with any digital SLR and digital video camera with a white balance function.
Installation - Squeeze the two buttons on the exterior of the filter ring and insert the ExpoCap into the threaded recess in front of your camera lens. To remove the ExpoCap, simply reverse this action.
Stacking ExpoCap With Other Filters - The ExpoCap can be installed and used as intended over other camera filters, such as Skylight or Polarizing filters. Note that any color characteristics introduced by filters stacked with the ExpoCap during the custom white balance procedure will be neutralized in the process. If color correction from a filter is desired, then the custom white balance must be taken without the desired filter in place.
Proper Exposure - It is essential to obtain a proper exposure while setting a custom WB. Failure to do so may result in the inability to set a correct balance. The most convenient way to obtain a proper exposure through the ExpoCap is to use an automatic exposure (AE) setting such as the P, S or A modes.
How to Set a Custom WB Using ExpoCap - Install the ExpoCap on the end of the lens. Set your camera to an AE mode, set your focus to manual (your camera may not respond in auto focus with the disc installed), then press the shutter release button. Select or save this setting or the resulting image as the reference for your custom white balance. You must set a different custom white balance for each change in lighting.
Where to Aim the Camera - The best results are obtained by standing near, or in similar lighting as your subject and pointing the camera back towards the position from which you will take the picture. In other words, the same color of light falling on your subject must also strike the front surface of the ExpoDisc. See the following examples for tips in some common lighting conditions.
Artificial Light
1. Single Light Source. Aim the camera towards the light source.
2. Dual Light Source. Aim the camera midway between the lights. Copyright 2005, ExpoImaging, Inc. 3. Pop-up Flash. You may get inconsistent results by aiming the camera and the flash directly towards the subject, especially in situations where the subject is backlit. 4. Mixed Lighting (More than 2 Light Sources). In open spaces with multiple, diffuse light sources; aim the camera in the general direction of the lights. In spaces with multiple bright lights, it may be necessary to balance to the dominant light.
Natural Light
1. Sunlight. Aim the camera towards the sun, but only after installing the ExpoCap.
2. Sunrise and Sunset. When shooting the warm light of a sunrise or sunset, aiming the camera towards the sun will neutralize the warmth. Aiming the camera away from the sun will enhance the warmth of the light.
3. Open Shade. Stand near the subject, or in similar lighting and aim the camera back towards camera position.
4. Clouds. Stand near the subject, or in similar lighting and aim camera back towards camera position.
5. Filtered Light. Aim the camera through the filtering medium towards the light source.
Nikon D70, D70s and D50 Custom White Balance Procedure
1. Use an automatic exposure (AE) setting such as the P, S or A modes to ensure a correct white balance exposure through the ExpoCap
2. Install the ExpoCap
3. Set camera to Manual Focus mode
4. Push and hold WB button with left thumb while turning right thumb wheel to select Pre in the control panel, then release WB button
5. Push and hold WB button again until Pre begins to blink in the control panel (3 seconds)
6. While Pre is blinking (10 seconds), aim camera towards light source or scene to balance and press the shutter release button
7. Good will replace Pre in the control to indicate a successful white balance capture
8. If no good, then repeat steps 5 and 6 until you see good flash in the control panel (too much, or too little light may result in a no good reading)
9. Press the shutter release button to exit menu functions
10. Remove the ExpoCap, return camera to auto focus mode if desired, and start shooting
Canon Digital Rebel 300D and Digital Rebel 350D XT Custom White Balance Procedure
1. Use an automatic exposure (AE) setting such as the P, S or A modes to ensure a correct white balance exposure through the ExpoCap
2. Install the ExpoCap
3. Set camera to Manual Focus mode
4. Take picture while aiming camera towards light source or scene to balance
5. Push MENU button and select the camera icon tab.
6. Select CUSTOM WB using down arrow, then push SET button
7. Push SET button again to select ExpoCap picture (gray frame) just taken
8. Push MENU button to exit menu
9. Push and hold WB button down arrow on back of camera while rotating main dial on top of camera to select the custom WB icon in control panel
10. Remove the ExpoCap, return camera to auto focus mode if desired, and start shooting
- 67mm ExpoDisc White Balance Filter
- Filter Lanyard
- Individual Calibration Certificate for the Filter
- Quick Start Guide
- Complete Users Guide
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