SENSITIVE – Having the power of sensation; ready and delicate in response to outside influences; able to register minute changes or differences.
LINE SENSITIVITY – Sensitive line is sensitive in its description of and response to both inner and outer contours or edges of an object. It registers minute changes or differences found along contours or edges. Sensitive line conveys a strong sense of volume, mass, form, weight, dimensionality, and space.
3 QUALITIES OF SENSITIVE LINE:
1. Weight – The thickness or thinness of the line.
2. Value – The darkness or lightness of the line.
3. Texture – The roughness or smoothness of the line.
APPLICATIONS OF LINE SENSITIVITY:
Light and Dark or Light Source –Edges are lighter near the light source and dark within the shadow area.
Weight and Tension – Where weight is supported, either visually or in reality, a darker or heavier line can be used. Whereas, where weight is suspended or there is lack of tension, a lighter more delicate line can be used (ex: the folds and creases of fabric).
3. Spatial Sequence – Darker lines come forward and light lines recede or move back in space. The objects closer to you should have darker, crisper lines than the objects farther away. This applies not only to spatial relationships between various objects, but also to spatial relationships within a single object that is 3-dimensional.
Overlapping – Similar to Spatial Sequence, Line sensitivity can be applied where edges of objects overlap other edges of objects within your picture plane. Consider where two edges of objects overlap – darkening the edge of the object that is in front will help to bring that object forward, differentiating it from the one behind it.
5. Strength or Force of an Edge – Not all edges are equal in strength or force. Most exterior edges, where a form meets negative space, are firm and definite. Interior edges however can range from firm to fairly gentle. (think of the interior creases of a bulb of garlic).
Focal Points/Degrees of Importance – This method implies the development of focal points in a composition through greater development of line. Areas of greater or lesser importance are described to a greater or lesser degree through line.