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Digital photography technology has made it possible for many camera settings to be determined and selected automatically that, in the past, film photographers had to judge and set manually. One setting that is still a challenge for digital cameras is white balance; and correct white balance is absolutely necessary if you expect the colors in your photos to be sharp and accurate. To aid in achieving this, camera companies make their cameras with a custom white balance capability, which sets a camera to the specific color temperature of the light on a scene or subject.
Read real customer reviews of the ExpoDisc Professional Digital White Balance Filter here.
This process is now easier and faster with the ExpoDisc Professional Digital White Balance Filter from ExpoImaging. You can use an ExpoDisc with any digital SLR and digital video camera with a white balance function. Instead of relying on a gray card, white card or calibration target to measure and set the correct white balance, the ExpoDisc is temporarily attached to the front of the lens with quick pressure-release friction mounts in various sizes (including 52mm, 58mm, 62mm, 67mm, 72mm, 77mm, 82mm, as well as 4x5.65 Video Format Filters). Then, as the incident light enters the lens, you set your camera's custom white balance.
Although many casual photographers, and even hobbyists and enthusiasts, will find that the auto white balance on their cameras does a good job for common light conditions, the ExpoDisc could be the critical difference when shooting more creative images with unusual light sources.
There are a number of immediate benefits to the ExpoDisc system.
Your camera is transformed into an incident color-metering tool. This means you can forget about the disadvantages of gray cards, white cards and calibration targets, such as their bulky size, superfluous reflective quality, poor angle and the struggle to fill the frame.
When you're able to set a custom and accurate white balance with an ExpoDisc and your camera, you'll spend no, or very little, time making color corrections of the RAW or JPEG files during post-production.
An ExpoDisc will help you attain better quality in your photos whether you're shooting in natural, artificial and studio lighting, or even mixed-lighting conditions.
Although ExpoDisc comes in many sizes, you may not need one for every size lens in your bag. Purchase the ExpoDisc filter that covers the front of your largest lens, and then simply hold it in front of your smaller lenses.
ExpoDisc Portrait Filter
The standard ExpoDisc filter produces neutral whites throughout your images. ExpoImaging has also developed the ExpoDisc Portrait Filter that is an excellent aid for portrait photographers. Their customers will probably also be happy they don't have to hold a gray card in front of their face. This type of ExpoDisc also neutralizes the whites, but then gives portrait photos a delicate, warm cast, so skin tones look more natural. The ExpoDisc Portrait Filter is also a time-saver because the photographer is able to encapsulate several on-location and post-production adjustments for white balance with a single, quick process.
ExpoDisc Video Format Filter
Video enthusiasts and videographers can also benefit from the ExpoDisc technology with its Video Format Filter. It comes in a 4" x 5.65" sturdy aluminum frame that is easy to hold. It works essentially the same as the Neutral and Portrait filters, designed to adjust the various levels of colorcast that appear during video recording. These could be blue, green, red and yellow, but the ExpoDisc Video Format Filter provides a highly accurate incident light reading, so your video camera is set to a white balance that neutralizes any of these colorcasts.
ExpoDisc carefully chooses optical-grade materials to make its filters, and then hand calibrates and tests them with a high-tech transmission spectrophotometer. The company also has very high standards for color neutrality and light transmission, guaranteeing that each disc is within plus or minus 2% of neutral. ExpoDisc ranges in price from $69.95 to $169.95.
Here's some examples below, but click through to their product page to see and learn more: