Comprehensive - Contains 11 double-sided infassic cards featuring 19 different photography concepts. Includes info about exposure, camera settings, shooting, special situations, handling & care, and troubleshooting. Additionally, they are concise, easy-to-read, and great for learning and remembering basic photography skills. | Sturdy cards - Made from thick, durable plastic that is waterproof and scratch-resistant. Perfect for beginner or intermediate photographers in need of photography accessories. The snap cards also make a simple and easy gift for any amateur or aspiring photographers. | An essential accessory for blooming photographers - These guides and tips are compatible with all models of Canon, Nikon, and Sony, as well as any other digital single-lens reflex cameras. Works with Canon Rebel T7, Canon EOS, Nikon D3300, Nikon d850, Sony A7R, Sony A6000 and more. | Easy to carry - Measures 4 inches in height by 3 inches in width, making it a great size to either store in a pocket or in a camera bag. The ring can also be used to attach the cards to a camera bag, belt loop, or purse. | Some of the concepts included are: shutter speed, motion blur, aperture, depth of field, ISO, grain, exposure, shutter release modes, focus modes, white balance, shooting in manual, handling and troubleshooting. On top of basic photography concepts and camera settings, these cards also cover special situations, such as how to photograph waterfalls, fireworks, sunsets, and nighttime skies.