Editing Hyperfocal distance (section)

===Taylor 1892===
John Traill Taylor recalls this word formula for a sort of hyperfocal distance:<ref>{{cite book |first=J. Traill |last=Taylor |url=https://archive.org/details/opticsofphotogra00taylrich |title=The Optics of Photography and Photographic Lenses |location=London |publisher=Whittaker & Co |year=1892 }}</ref>

{{blockquote|We have seen it laid down as an approximative rule by some writers on optics (Thomas Sutton, if we remember aright), that if the diameter of the stop be a fortieth part of the focus of the lens, the depth of focus will range between infinity and a distance equal to four times as many feet as there are inches in the focus of the lens.}}

This formula implies a stricter CoC criterion than we typically use today.