Similar to the quality issues addressed later by high-definition television, the visual fidelity of movies was limited by the medium. When projected onto a large screen, the grain of 35 mm film stock is often quite visible, reducing the quality of the displayed image.
The limitations in movie picture quality were similar to those encountered with high-definition television. The grain of 35 mm film stock becomes visible when projected onto a big screen, thereby reducing the overall visual quality of the displayed image.