Remember the “old-style”, ordinary middle-gray card, the one so often used to help set exposure? As time went on, and digital photography came into its own, that same gray card was sometimes used to set in-camera white balance, or in post-production to neutralize color-cast effects produced by in-scene illuminants.
The problem is that many gray cards look gray, but the reflected light from the card may be affected by materials used its construction. These materials are considered to be “spectrally-biased”, in other words, they may reflect a color-cast from the illuminant in use.
If one uses a different material, one that is “spectrally-neutral”, it will return a result (reflected light) that is accurate regardless of lighting used. The material will have a neutral appearance, with little or no color-cast. The SpyderCUBE, which is discussed below, is constructed of these materials. That is what makes it so useful in setting in-camera white balance, and in neutralizing overall color in post-production.
Here’s a demonstration using an ordinary gray card purchased at my local camera shop….[Read More]
Join Datacolor at the Florida Professional Photographers Convention. Stop by booth #33 to learn the ins and outs of color management and watch live demos using the Spyder line of products.
Saturday, August 17th – Wednesday, August 21st, 2013
Ten years ago Harald Johnson authored the best-selling book Mastering Digital Printing. It helped to shape the digital printing revolution. In this comprehensive article on PetaPixel, Harald takes a look at the world of digital printing since then. Those with a sharp eye may notice Datacolor’s own C. David Tobie listed on the book cover, and may recognize work by Datacolor Expert David Saffir a bit further into the article. Whether you send out for prints, or print your own images, this article is a must-read. Thank you, Harald, for this timely update.[Read More]