Resolution has nothing to do with exposure.

Yeah you're right. But in my post, I wasnt referring to the resolution of the image itself. I'm referring to the resolution of the LCD.

Darthchilli's comment was about not being able to tell from his LCD whether he has a good image or a bad image. I assumed he meant the LCD on the XTi was not good. What I'm saying is that even with a higher quality/higher resolution "LCD" like the one on the D90, you can never really trust how your image looks on the LCD and it isn't always accurate to use the LCD to guage whether you have a good shot or a bad shot.

Im still a noob, but when he's saying good or bad shot, i automatically think proper/improper exposure - and proper exposure "usually" means a good shot (unless of course you're trying to do something more creative and are intentionally over/under exposing) Either way though, whether you're looking at a good shot thats properly exposed, or a good shot that is creatively meant to be improperly exposed, the histogram is always going to be the key...

if I'm wrong to assume that good shot = proper exposure and bad shot = improper exposure (unless intentionally done), let me know :)..I'm here to learn :thumbsup: I know many of you are much more experienced in this art than I.

It doesn't matter how low or how high your screen resolution is to figure out if you have a 'good' or 'bad' shot.

Most DSLR screens are too bright, that's why it's best to look at the histogram. Some of the lower end cameras only have an overall histogram (usually just the green channel, I think) whereas the higher end ones have the histogram separated into the RGB components.

I found the RGB histogram feature really cool. Didn't know my 40D had it when I was buying it. :D

It's very helpful for getting a more critical exposure, as reds blow out sooner than the other colours.

I find it's also a good idea to zoom into the photo a little bit on the lcd screen to see how sharp your photo actually is. It may look sharp on your small lcd, but when you get home, you find out that you may actually have some motion blur.