Results of transforming the visual light curves for (a) RU And, (b) RU Cyg, and (c) U Per compared with the photometric V light curves (black) and the original visual light curves (red). The results obtained with both the global (orange) and star-specific (blue) V and B − V plus constant transformations are shown. Only sections of the full JD ranges are displayed to make the differences in the curves more apparent.