I felt for some time that the DP1 have much better battery life than I expected or felt at first – mainly due to the fact that my initial shooting habit changed some with time – my interest in zooming into every single detail in every image has now matured and I can relax more.
I decided to make new test.
I turned off the LCD, turned on full AF and put on the external view finder. In order to take as many shots as possible I also turned on continues mode. Three pictures was taken each time. (95% of the time). ISO100 used on the first 400 – then ISO400 after that. I restarted the camera 30 times in a row to make test more real. I shot some indoor and some out door. It does take some energy to take as many shots as I did. :D In one day.
RAW files: 250 (2.97GB)
JPEG Full size: 236 (577MB)
JPEG Med size: 172 (108MB)
JPEG Low size: 218 (72MB)
Movies: 3 (total 60MB > 4min)
Sound file: 1
In short: LCD off – AF on – Continues mode on.
Using LCD on maybe 30-40 shots. MF used on about 20 shots.