Which lighting technique is characterized by blurred and subtle shadows?

Soft lighting is characterized by blurred and subtle shadows, creating a gentle and diffused illumination that reduces harsh contrasts. This technique is often achieved by using light sources that are large relative to the subject or by employing diffusers to soften the light. The result is an even lighting distribution that minimizes features like wrinkles and blemishes in subjects, making it particularly favorable for portrait photography and video.

In contrast to soft lighting, hard lighting generates sharp, distinct shadows and highlights due to a small light source, leading to a more dramatic appearance. Backlighting involves illuminating the subject from behind, often creating a silhouetted effect and enhances the contours of the subject without providing detail to the front. Key lighting, while important in overall lighting setups, refers to the primary source of illumination and can be either hard or soft depending on the context, but the key characteristic of blurred shadows specifically points to soft lighting as the correct choice.