Not sure if this is the right place to post this question - I apologize if it's not! I've come to the conclusion that alot of my post processing issues are due to a poorly calibrated monitor. I've thought about buying a calibration device, like a spyder. But honestly, I've spent so much money on other photographic equipment that I'd rather not if I don't have to. So I thought I'd go out, buy a 18% Gray card and then create a 18% image (RGB values 128, 128, 128)...post the image on the screen and manually calibrate the screen until it matches the actual card. I'd like to know if this is a feasible way to do it? would it be fairly accurate? At least until I can purchase a Spyder? Any other ideas? Thanks!