BlueTech 55MM Macro Close Up Filter Set (+1, +2, +4, +10) For Sony Alpha SLT, A33, A35, A37, A55, A57, A57M, A57K, A58, A58K, A65, A65V, A65VL, A77, A77II, A99, A99V, A850, A900 Digital SLR Cameras NOTE: This Kit is compatible with all 55mm lenses. Please verify your camera's lens thread size before ordering. Enables you to get much closer than the minimum focus of the standard camera lens These Filters Are Double-Threaded Which Will Enable You To Combine Together or Use With Other Lenses The Macro Close-Up Set is the simplest and least expensive method of close-up photography. Have you ever wished that your lens could focus closer than it does? Imagine that you could put a magnifying glass in front of your camera's lens.