Originally posted by Kriss changing the "color space."
This made me wonder. What colour space were you using until now? It could very well be one reason for your dull colours. I suppose you can set your camera to use either Adobe RGB or sRGB?
Adobe RGB, in theory, offers a wider colour range and gives you more options in post processing. But it also forces you to
do post processing, and do it correctly throughout the whole workflow. It's an sRGB world out there, it's what monitors use (albeit some will display xx,x% of Adobe), it's what is used on the internet and usually by photo labs, too.
If you do not convert your Adobe RGB into sRGB colour space on the way you will get washed out, dull colours. Except when printing directly from Photoshop they'll just be interpreted incorrectly and cut off. That's what made me switch. I liked the sound of Adobe offering "more", but it's just one more thing that can go wrong and I didn't want to keep bothering about it.
This fella
here explains it nicely and in more detail.
Btw. I have to deal with colourspaces on a daily basis (film/video, so far from being an expert for photo) and it. is. hell. There's whole books and scientific papers about it, some of which I read, and I still don't quite get it in my head. Why can we never settle on one thing, that's working "well enough".