Toni

		Toni features twelve grayscale steps, six closely spaced light chips and six similarly closely spaced dark chips, plus two gamma step gray bars. The darkest step is DSC's popular 3-D CaviBlack, which typifies the darkest area in any real scene. If the budget only allows one grayscale chart, make sure it's a Toni. Not only does Toni let you set white, black and gamma levels, but also the vitally important toe and knee adjustments. Note below how the upper and lower horizontal gray gamma bars help in lighting the chart evenly.

Here lighting is even and the two horizontal gamma bars fall in a straight line at the same position.		Uneven lighting top-to-bottom will produce double gamma bars.


Uneven lighting side-to-side will produce a tilted gamma bar		A hotspot in the center of the pattern will produce a curved gamma trace.
The simulated waveforms above are for a theoretically perfect camera. Real cameras will inevitably show compression in the darker steps as shown below.

In production, a few frames of a Toni along with CamAlign or Combi Grayscale/colorbar shot at the head of a scene provides unequalled color matching and level optimization in post.