In the professional and advanced amateur segments, Photo CD had been eclipsed by low cost desktop scanners such as those from Nikon and Minolta in the mid range, and by drum scanners at the very high end. While the pixel resolution of Photo CD was still comparable or better than the alternatives, Photo CD suffered from a number of other disadvantages. Firstly, the Photo CD color space, designed for TV display, is smaller than what can be achieved by even a low cost desktop scanner. Secondly, the color rendition of Photo CD images changed over time and with different scanner versions; 4050 scanners had different color rendition to earlier versions. Thirdly, the dynamic range of scans was lower than for desktop scanners. Tests at the time indicated that the dmax rating (a measure of maximum density obtainable) of Photo CD was 2.8-3.0, while commonly available desktop scanners were reaching 4.2, a substantial difference. As a result of this, and Photo CD's problems with color rendering, by 2004 the professional segment of the user community had generally turned against Photo CD.