CamTethering

CamTethering is an application for Mac OS X that lets you remote control your digital camera from your computer (this is also named as tethering).

This software uses the Picture Transfer Protocol (PTP) and Media Transfer Protocol (MTP) to communicate with cameras.
With CamTethering you can get and set many properties of the camera, such as shutter speed, F number, ISO, focal length,…
CamTethering can communicate with cameras connected to your computer through USB, Firewire, WiFi, Bluetooth, etc.