The eyedropper is an image-editing tool used to sample a colour from one part of an image so that it can be applied elsewhere, whether for painting, drawing, or filling areas in the same image. This tool allows photographers and digital artists to maintain colour consistency, match tones, or replicate specific hues precisely. In more advanced editing features, the eyedropper can also be used to define the black and white points in an image, helping to adjust contrast and achieve accurate tonal balance.
Understanding how to use the eyedropper is essential for photo retouching, compositing, and colour correction. By accurately sampling and applying colours, photographers and designers can create seamless edits, maintain visual cohesion, and ensure that images are consistent in appearance across different elements or projects.