Ive always set-up cameras to a grayscale chart, but my dark tones seem to be crushed and dont have the deep tones seen on network shows?
A. This is a common problem with traditional front-lit test charts. To hide reflections, manufacturers use a flat matte surface on their charts and this diffuse surface results in varying degrees of flare. Dark tones are particularly affected. For example, 2% surface flare has a minimal effect at the white step, but because the black step should only be reflecting 1% total light, the 2% flare results in an error of 200%. DSC’s CamAlign Charts address this problem as discussed above, the laminated surface increases dynamic range and color saturation, and prevents surface damage. The dynamic range of matte surfaced charts is a particularly relevant issue in HD applications.
