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Review Summary
2012-09-23T21:00:00
Easier to carry than a grey card or white paper. But not as accurate. Use like an exposure meter. Must take readings from the position of the subject. Will help approximate the average white balance hitting the sides and front of a three dimensional object like a person, whereas the grey card only gets the reflected light from one direction.
BHN
2011-03-07T19:00:00
I tried to put this on after the UV filter, but it kept on falling off. Tried different UV filters to try to get more for it to hold onto, but no luck.
Michael S.
2008-03-05T19:00:00
I bought this to show my students the various ways to set white balance. In the tests we conducted in class it acheives slightly better performance that a standard white card but is much easier to use. I would imagine for action photographers it would be a big help as you wouldn't have to be juggling the card set around when setting balance. Now that I have it I will be using it quite a bit. It is also very well made and the unique mounting system works like a charm.
Jeffrey C.
2007-03-25T21:00:00
Found it very useful, especially with my old F3 and D1.
Steveinlc
2007-02-04T19:00:00
I take hundreds of pictures in night indoor settings with difficult lighting conditions - multi-colored lights, and mixed lighting sources. Even though I have a great Canon EOS 20D camera and several very nice lenses, I still had a terrible time with white balance with people looking too gold or gold-green or red. After each session I would spend 8-12 and more hours correcting all the pictures in Photoshop. With the ExpoDisc, and carefully using it following the instructions that came with it, and the camera settings, my pictures are now coming out great right out of the camera, saving me hours of post processing work. My experience with digital cameras is that all of them are difficult to get the white balance right, and the ExpoDisc is the best tool I have found to solve this problem. One of the neatest things is that you can use the ExpoDisc as a lens cap, so it is always handy for use to set the white balance.
C4


Time-lapse photography is great bridge between still photography and videography. Both disciplines co-mingle in this easy-to-learn, yet endlessly challenging, creative technique.
Get accurate color in difficult lighting with the patented ExpoDisc, the fast and easy digital white balance filter. Simply read and set white balance with the ExpoDisc in place before shooting and you'll reduce or eliminate the need for post-capture color adjustments.
Get the white balance solution that is quickly becoming the preferred method of achieving accurate color balance for professional photographers today.
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.