Originally posted by Ash
Firstly I would suggest using the histogram as a guide to the results you're getting. Secondly, utilise all the tools available to review your results to satisfaction, such as the image zoom function - going to 8-11x you'll see enough detail to judge whether your shots are sharp enough. Lastly, LCD resolution matters. That's why the K-7, K-5 and K-r screens are a notch better and easier to review results - the extra screen resolution makes this happen.
I use the zoom function, have turned my LCD to its brightest display and the histogram wont suit you in every situation. I am in my 3rd university course focusing on lighting (B & W work) and its rather tough to see what I have. Many of the shots are either really dark or really light (purposely) so the histogram is of little use in these situations.
My question was more of a general one in comparing different models LCD screens and if the difference is significant, or if there is still a decent amount of trouble on the higher end cameras?