When accurate color is imperative in your macro photography, Calumet Color Correction Tabs provide a neutral reference to precisely balance your images. Each package includes 20 adhesive tabs that are small enough for the finest details you shoot. Our Color Correction Tabs are ideal for medical, scientific and commercial use or any field of macro work where color accuracy is critical.The tabs can also be used in any photo editing software with support for gray balance. This is just one of many possible methods using Adobe Photoshop. Consult your software’s manual for specific instructions.