photography in 1940 and appointment of Beaumont Newhall as its first curator are often cited as institutional confirmation of photography's status as an art. 1950s to present day There is now a trend toward a careful staging and lighting of the picture, rather than hoping to "discover" it ready-made. Photographers such as Gregory Crewdson, and Jeff Wall are noted for the quality of their staged pictures. Additionally, new technological trends in digital photography have opened a new direction in full spectrum photography, where careful filtering choices across the ultraviolet, visible and infrared lead to new artistic visions.As printing technologies have improved since around 1980, a photographer's art prints reproduced in a finely-printed limited-edition book have now become an area of strong interest to collectors. This is because books usually have high production values, a short print run, and their limited market means they are almost never reprinted. The collector's market in photography books by individual photographers is developing rapidly. According to Art Market Trends 2004 7,000 photographs were sold in auction rooms in 2004, and photographs averaged a 7.6 percent annual price rise from 1994 and 2004. Around 80 percent were sold in the United States, although auction sales only record a fraction of total private sales. There is now a thriving collectors' market for which the most sought-after art photographers will produce high quality archival prints in strictly limited editions. Attempts by online art retailers to sell fine photography to the general public alongside prints of paintings have had mixed results, with strong sales coming only from the traditional major photographers such as Ansel Adams. In addition to the "digital movement" towards manipulation, filtering, or resolution changes, some fine artists deliberately seek a "naturalistic," including "natural lighting" as a value in itself. Sometimes the art work as in the case of Gerhard Richter consists of a photographic image that has been subsequently painted over with oil paints and/or contains some political or historical significance beyond the image itself. The existence of "photographically-projected painting" now blurs the line between painting and photography which traditionally was absolute. Framing and print size Until the mid-1950s it was widely considered vulgar and pretentious to frame a photograph for a gallery exhibition. Prints were usually simply pasted onto blockboard or plywood, or given a white border in the darkroom and then pinned at the corners onto display boards. Prints were thus shown without any