This guide sticker outlines the 3 Auto-Focus modes on many top of the line Nikon DSLR camera's including the D3x, D3s, D300s, D-300, D-700, D-200, and others. They are great for easy reference and as a learning tool. The first heading at top is "AUTO" and it indicates that the top or first position of the auto focus mode selector switch. It is used for the setting that allows the camera to focus on any object closest to the camera and lens. The next major heading is "DYNAMIC" which indicates the middle setting of the selector switch on the back of the camera and is to be used with the "C" or continuous setting on the front lower left of the camera. This setting is used when photographing moving objects and you want the auto-focus to follow the continuously moving object. Thus the white C at the end of the word "DYNAMIC". The third and lower heading is "SINGLE" and the word begins with a white "S" that corresponds to the necessary "Single" focus mode selector position on the front lower left of the camera. The stickers measure 24mm x 17mm. Each order is for a sheet of 4 stickers. You can place them on each of your lenses or anywhere on the camera where there is a suitable surface for proper adhesion. If your at all like me, where my memory is fading, this easy to read guide acts as an instruction or memory guide. The stickers will not adhere to the rubber parts or grips. Surfaces must be smooth, flat and non-porous like the monitor protective plastic or lens barrels. Place one on the front of your owners manual for quick and easy reference. Carefully clean non-paper surfaces before applying. Avoid touching adhesive side before applying sticker.