50 Things Photographers Need to Know About Focus

46. POST-PRODUCTION SHARPENING

CAPTURING IMAGES IN focus is critical because turning a blurry photo into a sharp one is not possible. Despite the fiction that movies and TV crime dramas have presented as cutting-edge technology, the ability to sharpen blurry photos to perfect focus just doesn’t exist. However, sharpening is an important step in the post-production process and understanding how the technique works and the limitations of what it can do is important. Photos need sharpening because the capture process is imperfect and details can be lost. The first limitation is that we are capturing images with a limited amount of individual pixels. ...