noun
Technical term used in photography, imaging, and optics to describe how clearly details are rendered. Often used in contexts like 鮮鋭度が高い (high sharpness).
このレンズは鮮鋭度が非常に高い。
This lens has very high sharpness.
画像の鮮鋭度を調整する。
Adjust the sharpness of the image.
シャープネス is the common loanword for sharpness in photography and image editing, often used interchangeably with 鮮鋭度 in casual contexts, but 鮮鋭度 is more technical.
Compound of 鮮鋭 (せんえい, 'sharp, keen') and 度 (ど, 'degree'). The exact historical derivation is uncertain, but the term is used in modern technical fields.