Kenko 52mm MC Close-up Lens No.3 Used a few times. A close-up lens is an easy-to-use close-up photography item that you simply attach to the front of your existing lens. You can get even closer to your subject than the minimum focusing distance (the shortest distance at which your lens can focus on a subject) of your lens, allowing you to take larger photos. Using a close-up lens adds new photographic expressions, such as capturing a portion of a flower filling the frame or photographing details invisible to the naked eye. It's perfect for close-up shots of flowers and small objects. Generally, wide-angle lenses have a short minimum focusing distance, allowing you to get close to the subject, so the "MC Close-up" is designed to be ideal for standard to telephoto lenses. (Excerpt from Kenko Tokina's description) #Kenko