A Picture To Show You Clearly The Effects of Aperture, Shutter Speed and ISO On Images - basic photography, exposure triangle, learn photography
Histograms - Metering modes explained and how to know which one to use by Amy Kolodziej
Water photography ideas - Matthew Brandt Stain, smudge and erode photographs using water
Pinhegg - created by Francesco Capponi, is a pinhole camera crafted from an eggshell. The “camera” is only good for one shot and must be sacrificed in order to reveal the image.