The excellent lighting site Strobist have released their Lighting 101 guide as a free PDF. Check it out! What’s Strobist? “Teaching you how to use your small flashes, off camera, to get professional results. Your flash photography will never be the same again.”

These three Kodak publications are available as PDF downloads from archive.org. As you can see, they’re quite old, and the copyright has expired. Kodak Monograph 1: The silver bromide grain of photographic emulsions, Adrian Peter Herman Trivelli (1921) Kodak Monograph 2: The theory of development, Adolph H. Nietz (1922) The Photographic Negative, William Henry Burbank [...]

Wilhelm Research has released their book, The Permanence and Care of Color Photographs: Traditional and Digital Color Prints, Color Negatives, Slides, and Motion Pictures, by Henry Wilhelm with contributing author Carol Brower—originally published in 1993—as a free, downloadable PDF. You can get the individual chapters here at Wilhelm Research’s site, or from this direct link [...]