The monitor performs auto-adjustment automatically when you change the video mode, but you can start it up manually from the menu, if necessary. The entire process takes about 2-3 seconds, and I can’t find any problems with the results.
For some mysterious reason, Sony sets the default color temperature to 9300K. However, the image is not bluish as it should be with such a high temperature: my measurements told that this setting corresponded to 5930K white and 7950K gray. Let me remind you that we saw this situation with nearly every LCD monitor from Sony. The “6500K” setting corresponds to 5440K white and 6480K gray, while the “User” setting by default means 5680K white and 8260K gray.
The horizontal viewing angles are good: you should deflect far away from the center of the screen for the white color to become yellowish. The vertical angles are somewhat worse, but anyway better than average TN+Film matrixes provide: the difference in brightness between the top and bottom of the screen is practically unperceivable. On the other hand, the specifications claim the viewing angles to be 170°/170°, but SDM-HX73 cannot even be compared with the models from Samsung on PVA matrixes which specs also say 170°/170°. So, the PVA technology remains the absolute leader as far as viewing angles are concerned.
I tested SDM-HX73 in the PC mode (70% backlight brightness, 50% matrix brightness, 70% contrast), but with 6500K color temperature. I measured the response time on black-gray transitions at a matrix brightness of 70%, rather than maximum, since further increase of the brightness transformed black into gray, which hindered my measurements. To reach a screen brightness of 100nit, you can reduce the backlight brightness to 27%; it is regulated by power modulation of the lamp with a frequency of about 850Hz.
The color curves are good, save for a too-intensive blue. However, I have already got used to this, having tested a number of LCD monitors.
The declared response time is 16msec, but it turned to be 26msec at the maximum settings and 32msec at the default settings. There is one particular thing about the results: the pixel rise time nearly equals the pixel fall time at the maximum settings, while at the default settings the pixel rise time is higher, which leads to a more visible ghosting effect in moving objects. For example, a white line moving against the black background seems gray when the rise and fall times are equal, but when the rise and fall times differ much, the very width of the line changes. In average, the pixel rise time is about 25msec on black-gray transitions, which is rather good.
It’s not all well with the contrast ratio provided by this monitor. The level of black is much lower than 1nit when the screen brightness is low (although it cannot match the records set by PVA matrixes), but the specified maximum brightness of 400nit is a tricky thing. Well, the monitor can reach this brightness, but the level of black becomes too high so you can’t use such settings: black becomes light-gray.