Changing the tempo has a similar effect to changing the speed in that the image distorts based on a series of angled lines. It also replaces colour with grey, black, white and coloured noise for further comparison. However, multiples of ten do not appear to improve legibility in any way. Once again, only negative values should be used with this process to avoid total corruption. Increasing the value from -1 -99 seems to not only stretch the line upwards, but also zoom in on the contents along side the altered pattern. In terms of coloured images, the visibility and size of coloured chunks is also increased opposed to the opposite effect exhibited when changing the speed.