When viewed at a normal viewing distance, the first photo is the truest representation of the scene.

This device presents a simple binocular target that can be set from a close viewing distance out to optical infinity.

Nevertheless, from the right viewing distance, the paintings on view here, made over the last decade, are enthralling.

This so-called apparent viewing distance is designed into the viewfinder by the camera engineers.

Despite the fact that the gallery is wide enough to allow a proper viewing distance, those figures appear blurred and ill-proportioned.

The framing of the traditional photograph and its construction from a particular perspective offer a safe viewing distance.

Five women sat in comfortable arm chairs at a good viewing distance from the screens.

Any set will work well in a narrow room if the screen is big enough to be seen clearly from the farthest viewing distance.

For greater viewing distances, these sets are hardly satisfactory, and they are clearly designed to be watched by a single person.

Forget the messiness of years and days - every work of human artifice has a proper viewing distance.