The old problem of getting prints that were exactly (or almost) the same as you saw on your monitor, used to entail adjusting the monitor, using a print so that you could get the two working in something approaching harmony. You felt like the guy with two wristwatchs and not knowing the actual time. In short, a bitch of a job for those who needed some sort of fidelity.
For the last few weeks I have been using a hardware colorimeter which is a piece of hardware, that when you calibrate your monitor, sits on the screen, while the software fires known colours into it, which are read - the differences are calculated and the corrections applied to the video card driver. Not cheap, but does it work? The answer, is a resounding "Yes" The maount of money that had been wasted on photo paper and ink, (at 8 cartridges in this printer) seems to be a thing of the past. Now, it is first time, every time.
Also, if I wanted to, I could send files out to a printhouse with every confidence that colour repro will be spot on. If not, it is their end that needs fixing.
I post this, for those who have been wondering about calibration, or are just tearing their hair out. It really does a superb job. Have just done another calibration now and it is quite stunning to look at three matching monitors, if one includes the laptop. Epson share prices may take a dip as a result.
Pity my pictures are crap though...
Conan