What is isometric perspective primarily characterized by?

Isometric perspective is primarily characterized by a system using diagonal parallel lines to communicate depth. In this type of perspective, the three-dimensional space is represented on a two-dimensional plane without converging lines that would normally lead to a vanishing point. Instead, isometric drawings maintain the relative proportions of objects, allowing for a clear portrayal of spatial relationships without the distortion that occurs with linear perspective. This approach is particularly useful in technical and architectural drawings where accurate measurements and dimensions are critical, as it helps in visualizing complex structures without the complications of perspective distortion.

The other options describe different aspects of perspective drawing techniques, such as the alteration of object sizes based on distance and the use of vanishing points, which pertain to linear perspective rather than isometric. Negative space can contribute to the overall composition but is not a defining characteristic of isometric perspective.