“The Leaf,” originally thought to have been made around 1839 or later, has become the talk of the photo-historical world. The speculation about its origins became so intense that Sotheby’s and the print’s owners decided earlier this month to postpone its auction, so that researchers could begin delving into whether the image may be, in fact, one of the oldest photographic images in existence, dating to the 1790s. … Dr. Schaaf [historian], who said he was not paid by Sotheby’s or by the owner of “The Leaf” print, said that he had been aware of the images — also known as photograms, cameraless prints made by placing objects on photosensitive paper exposed to light — for many years. He had seen five of the six prints that were once compiled in an album by Henry Bright, a Briton whose family was part of a group of scientists and tinkerers active around Bristol in the late 18th century. … Probably in the 1790s, according to accounts written shortly afterward, Thomas Wedgwood, a son of the Wedgwood china family, began experimenting with what he called solar pictures, making images on paper coated with a silver nitrate solution. A friend of his, James Watt, wrote in a 1799 letter that he intended to try similar experiments and in 1802 another friend, Humphry Davy, wrote an account of Wedgwood’s experiments in an article for a scientific-society journal, titling it “An Account of a Method of Copying Paintings upon Glass, and of Making Profiles, by the Agency of Light Upon Nitrate of Silver.”… no known examples of the work of Wedgwood and his circle have ever been found. But Dr. Schaaf, in looking deeper into the leaf image, realized that these legendary lost images had something else in common: their creators were all part of the close social circle of the family of Henry Bright.
NYT

“The Leaf,” originally thought to have been made around 1839 or later, has become the talk of the photo-historical world. The speculation about its origins became so intense that Sotheby’s and the print’s owners decided earlier this month to postpone its auction, so that researchers could begin delving into whether the image may be, in fact, one of the oldest photographic images in existence, dating to the 1790s. … Dr. Schaaf [historian], who said he was not paid by Sotheby’s or by the owner of “The Leaf” print, said that he had been aware of the images — also known as photograms, cameraless prints made by placing objects on photosensitive paper exposed to light — for many years. He had seen five of the six prints that were once compiled in an album by Henry Bright, a Briton whose family was part of a group of scientists and tinkerers active around Bristol in the late 18th century. … Probably in the 1790s, according to accounts written shortly afterward, Thomas Wedgwood, a son of the Wedgwood china family, began experimenting with what he called solar pictures, making images on paper coated with a silver nitrate solution. A friend of his, James Watt, wrote in a 1799 letter that he intended to try similar experiments and in 1802 another friend, Humphry Davy, wrote an account of Wedgwood’s experiments in an article for a scientific-society journal, titling it “An Account of a Method of Copying Paintings upon Glass, and of Making Profiles, by the Agency of Light Upon Nitrate of Silver.”

… no known examples of the work of Wedgwood and his circle have ever been found. But Dr. Schaaf, in looking deeper into the leaf image, realized that these legendary lost images had something else in common: their creators were all part of the close social circle of the family of Henry Bright.

NYT