Effects of battery power on performance?
To what extent (if any) will the camera's battery affect either AF performance or Frame Rate, or both? If the camera indicates that the battery has only a 50% charge, for example, will either or both slow down, as compared with a 100% fully charged battery?
If the camera indicates 100% charge, but the battery has had repeated use and recharging for, say, 3 years, will that affect performance?
I'm asking specifically about a Nikon D7000, but guessing that the question is probably more universal. I realize that very cold weather is also a contributing factor.
Bill