Yes, I was using the built-in meter; I'm using f8 and a tripod, and trying to push up the exposure to just before clipping so I can have maximum latitude to play around with the raw files. I'd like to have a go with a proper meter to see how much difference it makes - I'll borrow one and have a play.
I can be too conservative on contrast, but I really dislike the way strong contrast can bugger up subtle tones and colours.