Lightdow offers pocket-sized quick reference cards made of durable plastic to help photographers of all levels improve their skills. These 5x8 inch cheat sheets contain 18 pages of concise and easy-to-understand tips with visual examples. They work with any camera model, including smartphones, point-and-shoot, mirrorless, and DSLRs of any brand. The cards cover various topics such as composition rules, indoor and outdoor lighting, on-camera flash, and specific shooting scenarios. For more advanced photographers, there are Neutral Density filter calculations included. The cards are weatherproof, rip-proof, and can be easily carried in a wallet or clipped to a camera bag. They serve as an accessible photography class in your pocket, providing fundamental concepts for capturing amazing photos in different situations, from sunsets to sports and portraits. For DSLR users, there's a specific deck covering exposure, aperture, shutter speed, and more. The cards are color-coded and suitable for Nikon, Canon, Sony, and other camera models. The set is compact and portable, making it a great gift for aspiring photographers. They eliminate the need for extensive manuals and classes, allowing you to get out and shoot right away.