1. unsharp - Adjective
2. unsharp - Verb
(tools) dulled or intentionally blunt.
Not sharp, as:
(imaging, graphics) out of focus; blurry.
unsharp (third-person singular simple present unsharps, present participle unsharping, simple past and past participle unsharped)
(transitive, imaging, graphics) To sharpen (an image) by creating a blurred ("unsharp") negative as a mask, and then combining that mask with the original.
It should be recognized that DOF limits are not hard boundaries between sharp and unsharp, and that there is little point in determining DOF limits to a precision of many significant figures. Source: Internet
In fact, many effects work exactly the same as the filters in PS and go by the same name such as the liquify effect, Gaussian blur, unsharp mask and median. Source: Internet
In general, higher radiation doses result in higher-resolution images, citation while lower doses lead to increased image noise and unsharp images. Source: Internet
The increase of the circle diameter with defocus is gradual, so the limits of depth of field are not hard boundaries between sharp and unsharp. Source: Internet
Figure 4 This aberration is quite distinct from that of the sharpness of reproduction; in unsharp, reproduction, the question of distortion arises if only parts of the object can be recognized in the figure. Source: Internet
In macro photography objects at even small distances from the plane of focus can be unsharp. Source: Internet