Quote Originally Posted by FM2N View Post
What stops me from removing the glass from a C330 screen and replacing the C-2 with the c330 glass in the hope of making the C-2 brighter?
I don't know if the C330 screen will be noticeably brighter enough to make it worth while. If you are going to swap screens, I'd just go straight for an aftermarket one.

Are you using a WLF? If you are using a prism, and have a dark image, I'd try a WLF. If that is still not good enough, try a chimney magnifying hood. I use the latter at least 80 percent of the time on my C series cameras. It's a real lifesaver IMHO.