52mm Tulip Lens Hood for UV Filter for PENTAX (K100D K110D K10D ist DS2 K200D K20D K2000 K5 KM Kx) Digital SLR Cameras. For Pentax K100D, K110D, K10D, ist DS2, K200D, K20D, K2000, K5, KM, Kx Cameras. The tulip lens hood blocks stray light from interfering with your photographs. This lens hood is intended for 52mm filter size lenses.