ASPECT RATIO: If you see the circle as an oval, you must change the aspect ratio of your monitor or video projector (from 4:3 to 16:9 or vice versa)

BRIGHTNESS-CONTRAST: Adjust in order to distinguish all the shades of grayscale. In a computer monitor it's easy. In TV monitors or video projectors, shades often confuse at both ends of the grayscale (critical areas A-B and I-J). Adjust it to appreciate all the changes in tone if its possible.

CROP EFFECT: The arrows at the edges of the testcard reach the real limit of the image. If you can't see the whole arrow the screen is not showing the whole picture. Old TV's, some flat screens and video projectors sometimes crop the edges. Look at the menu of your device to see if there is any option to display the "under scan" image.

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