The 15th annual Worldwide Pinhole Photography Day (WPPD) is April 26! Photographers all over the world are invited to make a pinhole photograph on that day to celebrate lens-less photography. You may scan and upload the image to a gallery on the WPPD website. Last year there were over 200 events and 3517 participants from 70 countries who shared images in the gallery. This year, the WPPD celebration is a part of the International Year of Light, sponsored by UNESCO and other scientific organizations.