What is the difference between FTP and PTP/IP?
FTP (File Transfer Protocol) and PTP/IP (Picture Transfer Protocol over Internet Protocol) are two different methods that wireless transmitters use to send images. When the camera opperates in FTP mode, it is the one that initiates the connection and manages the transfer of images. As such, it allows you to control which images are transmitted via the camera’s interface. It also has the advantage of being able to transmit images over the Internet if desired. When opperating in PTP/IP mode, the camera will behave as if it were teathered to the computer. This allows you to remotely control the camera from your computer as well as retrieve images, however since the computer manages the connection there is less control within the camera. With currently available software, for instance, there is no way to instruct the camera to only send JPEG images when shooting in a JPEG+RAW mode.
