Polaroid White Balance Lens Cap For The Canon Digital EOS Rebel SL1 (100D), T5I (700D), T5 (1200D), T4i (650D), T3 (1100D), T3i (600D), T1i (500D), T2i (550D), XSI (450D), XS (1000D), XTI (400D), XT (350D), 1D C, 70D, 60D, 60Da, 50D, 40D, 30D, 20D, 10D, 5D, 1D X, 1D, 5D Mark 2, 5D Mark 3, 7D, 6D Digital SLR Cameras Which Has This (18-135mm, 17-85mm, 24-85mm, 70-300mm L) Canon Lens Helps Eliminate Undesirable Color Casts Provides Accurate White Balance Measurement Works with Any Digital Camera that has Manual White Balance Feature Just Slip It On, Or Use the Adapter Provided Compact, Stores Easily &lt;&gt; Threaded, Screw-on Design