Final answer:
The catchlight is a sparkle in the subject's eye created by the key lighting technique, which is essential for adding depth and vitality to portraits in both photography and painting.
This correct answer C. Catchlight
Step-by-step explanation:
In key light technique, the catchlight is created in the subject's eye, which gives a sparkle or glint, enhancing the liveliness of the portrait.
This catchlight is important in photography and portrait painting as it adds depth and life to the subject's eyes.
When using key lighting, which is the main illumination for the subject's face, photographers and artists carefully position the light to achieve the desired effect, including this catchlight. Alongside key lighting,
techniques such as backlighting can create a silhouette effect, and fill flash is used to balance the light and avoid dark subjects against a bright background, like a sunset or window.
Preventing unwanted reflections, such as flash glare, is also crucial in photography. When photographing subjects with reflective surfaces in the background, angling the camera or the reflective subject can help to avoid glare, which is a bright spot of light bounced back into the camera. Similarly, when painting or drawing,
reflecting surfaces and the direction of light should be considered to avoid unnatural highlights and to control the depiction of light and shadow in the artwork.