Red pileated finch a white eye ring. The male has a red crest and a black crown, just as the grey pileated finch does, however its upper parts are dark wine red, with a reddish rump, and the underparts are a drab reddish colour. The red crest and black head are absent in the female and the upper parts are a little more brown than those of the male. The throat of the female is white and the underparts pink. This bird has a wide distribution in South America. Its range includes southern Brazil and northern Argentina, extending from Brasília and Rio de
Purple fringing usually attributed to chromatic aberration as described above, although it is not clear that all purple fringing can be explained this way. Other attributed causes of purple fringing in digital photography include many hypothesized sensor effects: Commonly advocated methods of avoiding purple fringing include: Post-processing to remove purple fringing (or chromatic aberration in general) usually involves scaling the fringed colour channel, or subtracting some of a scaled version of the blue channel, or other blue-channel tricks. Purple fringing In photography (particularly digital photography), purple fringing (sometimes called PF) is the term for an unfocused purple or magenta "ghost" image on