Close-up filters offer a world of new and creative possibilities. Close-up filters offer a way to explore macro photography with a lens you already own. This is the perfect, economical alternative to a macro lens. They work well with both traditional & digital cameras. Close-up filters screw onto the front of your lens, just like a protective UV filter, and allows closer focusing distances with a given lens. It is the equivalent of putting a magnifying glass in front of your lens. Like extension tubes, you can use multiple close-up filters to decrease the working distance to your subject. This 4 piece Close-up Filter Set consists of +1, +2, +4 & +10 diopters. To increase magnification, you can use multiple filters. For example, if you combine a +1 and +3 close-up filters, you will achieve the equivalent of a +4 filter. Allows for detailed close-up macro shots of small objects such as insects ,coins, flowers, etc. Tips for using close-up filters Use Macro Mode if your camera has one. Macro modes optimize the camera?s exposure system, and other functions for close-up macro photography. If your camera doesn?t have a Macro Mode, set the mode to Program. You can take successful photographs using any exposure mode, but until you become more familiar with them, stick to Program. Use autofocus for moving subjects, manual for static ones. For moving subjects at close distances, AF will help ensure sharp focus. Be ready to switch to manual if the autofocus struggles. To ensure sharp, well-focused macro photographs, attach your camera to a tripod. Unlike hands, which even under the best circumstances aren?t perfectly steady, tripods stabilize your camera.