My beloved Nikon D40 has an issue where the battery drains ridiculously fast. New OEM batteries and changers don't help, so I think I need to replace the body. Since almost all non-DSLR cameras out ...
I've a Nikon P330. Its USB charger is 5V/550mA and the manual says the following about charging the battery inserted in the camera through USB: About 4 hours and 30 minutes are required to charge ...
I plan to use my Canon 50D in a studio, tethered to a PC. It would be great if it drew the power it needed from the USB bus rather than from the battery, so I wouldn't need to worry about changing ...