Sharpness
41Depth of field — The area within the depth of field appears sharp, while the areas in front of and beyond the depth of field appear blurry …
42photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
43Acutance — An image with artificially increased accutance Another illustration, where overshoot caused by using unsharp masking to sharpen the image (bottom half) increases acutance. In photogra …
44Miniature faking — Digitally blurred miniature fake of Jodhpur Original p …
45Norchard railway station — Norchard Location Place Norchard Area Forest of Dean Operations Original company Severn and Wye Railway …
46sharp — [[t]ʃɑ͟ː(r)p[/t]] ♦♦ sharps, sharper, sharpest 1) ADJ GRADED A sharp point or edge is very thin and can cut through things very easily. A sharp knife, tool, or other object has a point or edge of this kind. The other end of the twig is sharpened… …
47Unsharp masking — is an image manipulation technique now familiar to many users of digital image processing software, but it seems to have been first used in Germany in the 1930s as a way of increasing the acutance, or apparent sharpness, of photographic images.… …
48Optical transfer function — The optical transfer function (OTF) of an imaging system (camera, video system, microscope etc) is the true measure of resolution (image sharpness) that the system is capable of. The common practice of defining resolution in terms of pixel count… …
49Disasters on the Severn — Disasters are common on the River Severn, as it is one of the most dangerous rivers in the United Kingdom, especially the Severn Estuary.Many lives have been lost as man endeavours to work and live alongside the longest river in Britain. With the …
50Fan Zhen — (范縝, hanyupinyin Fàn Zhěn) (circa 450 515) was a Chinese philosopher of the Southern Dynasty, remembered today for his treatise Shén Miè Lùn (simplified Chinese 神灭论, traditional Chinese 神滅論, On the Annihilation of the Soul ).He was born into a… …
