epäterävyyden
Epäterävyys, a Finnish term, translates to "unsharpness" or "blurriness" in English. It is commonly used in photography and visual arts to describe a lack of clear focus within an image. This can occur intentionally for artistic effect, such as creating a bokeh background to isolate a subject, or unintentionally due to camera shake, incorrect focus settings, or subject movement during exposure. In image processing, epäterävyys can refer to the degradation of image quality where fine details are lost and edges appear soft. Restoring sharpness to an unsharp image is a common task in digital photography and graphic design. The degree of epäterävyys can range from subtle softness to complete obscurity, rendering the image indistinct. Understanding and controlling epäterävyys is crucial for achieving desired visual outcomes in various media.