...mmm.....depends on how much "juice" your particular camera needs to operate.........
......The life or capacity of a battery is shown as so many mAh (milli Amp hours). 1000 mAh means that the battery can supply 1000 milliAmps for one hour (or 500 mA for two hours, etc). The larger this number, the longer the battery life........so you should be able to work it out from that...
....how you use your camera will also affect the life of the battery..... for example........merely taking pics by looking through the ordinary viewfinder with no flash will give a much longer period of use than using the LCD finder and flash all the time..........constant viewing of your shots will also drag down the power supply...........
...........commoner


"In theory, there is no difference between theory and practice. But, in practice, there is."