Here is how it works:
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.The 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 and passively
transmits 18% of it through to your camera’s light meter, effectively
producing a ‘gray frame’. You then set a custom white
balance using the ‘gray frame’ that results in accurate
color in most lighting conditions. Your camera essentially compensates
for and neutralizes the colorcast it sees through the ExpoDisc.
ExpoDisc
Digital Warm Balance Filter
Warming Solution for Digital Cameras and Digital Video
The new filter is designed for professional photographers, videographers,
and serious amateurs.
The new filter produces custom color at the point of capture. Photographers
no longer have to shoot through extra glass, carry inconsistent and
cumbersome cards, or spend hours on the computer in post-production
color correction. Users just need to read and set white balance with
the ExpoDisc Digital Warm Balance filter in place before shooting
to produce portraits and landscapes with warmer, more pleasing colors.
The Digital Warm Balance Filter is a calibrated, colored diffusion
filter with a bias that forces the digital camera to add precise quantities
of red and green color to a neutral balance. The filter is excellent
for warming (or balancing) skin tones in indoor or outdoor portraits
and scenery. It decreases color temperature; adds healthy skin tone
to images shot in open shade or overcast conditions; slightly reduces
the bluish cast on overcast days or at high noon; reduces excess blue
from flash indoors or in daylight flash-fill; as well as warms sea,
sky and high altitude shots.
Each ExpoDisc comes with a card recording its exact density and primary
color characteristics. The ExpoDisc filter works with digital cameras
and digital video, and is available in six standard sizes from 58mm
to 82mm.
Instruction Manual
(pdf, 116 kb)
Quick Start Manual (pdf, 68 kb)
ExpoDisc Product List
Digital White Balance
| EXPOD58 |
58mm ExpoDisc White Balance Filter |
| EXPOD62 |
62mm ExpoDisc White Balance Filter |
| EXPOD67 |
67mm ExpoDisc White Balance Filter |
| EXPOD72 |
72mm ExpoDisc White Balance Filter |
| EXPOD77 |
77mm ExpoDisc White Balance Filter |
| EXPOD82 |
82mm ExpoDisc White Balance Filter |
| EXPOD95 |
95mm ExpoDisc White Balance Filter |
Digital Warm Balance
| EXPOD58W |
58mm ExpoDisc Warm Balance Filter |
| EXPOD62W |
62mm ExpoDisc Warm Balance Filter |
| EXPOD67W |
67mm ExpoDisc Warm Balance Filter |
| EXPOD72W |
72mm ExpoDisc Warm Balance Filter |
| EXPOD77W |
77mm ExpoDisc Warm Balance Filter |
| EXPOD82W |
82mm ExpoDisc Warm Balance Filter |
| EXPOD95W |
95mm ExpoDisc Warm Balance Filter |
Flat Filters
| EXPOD44 |
ExpoDisc 4x4" Flat White Balance Filter |
| EXPOD44W |
ExpoDisc 4x4" Flat Warm Balance Filter |
| EXPOA101 |
Expo Depth of Field Guide (Aperture Guide) |
Photos © Claude Jodoin