If you can afford it, I'd get a chart from DSC labs - preferably some model of the Chroma du monde.
You get 3 main things from the Chroma du Monde.
First of all, it's a well-made chart that will be accurate under all lighting situations. Some materials have really uneven spectral responses and so will give you quite different results depending on the spectral characteristics of the lights you are using. If you set up using one of these (non-DSC) charts - especially if you're using a source with an odd spectral response like flos or LEDs - you may find that your camera reacts quite differently to the chart than to the actual scene you're shooting.
Second, the colors on the CDM make a pattern on a vector scope that matches the graticules and is quite nice to set up a camera to. This is quite useful if you are matching cameras (which you can actually do reasonably well on the EX1).
Third, even if you're not tweaking the camera much on set, having a few frames of a chart like this under each lighting setup can be really useful in post when it comes to doing color correction. It makes matching shots a breeze, and you can quickly get a sense of exactly what a particular grade is doing.
--
Jesse Rosen
Director of Technical Development
Abel Cine Tech, Inc.www.bustedskull.com
