Enables Mirror Lock-Up functionality

Allows automated exposures longer than 30 seconds

Ensures faster camera reaction to shutter release, especially in "High Dynamic Range" mode

Activates "Manual Hold" mode

Enables arbitrary shutter speeds in "One Shot" and "Time Lapse" modes

Allows pre-focusing the camera using the Promote Control "Focus" button

Enables basic Promote Control shutter release functionality even when out of battery power

FOR CANON:
The CN2 shutter cable is compatible with the following cameras:
Canon 400D, 450D, 500D, 1000D.

NOTE: Canon 550D camera is not supported with shutter cable due to the hardware limitations of the camera. The 550D cannot release its shutter via shutter cable while also connected via USB cable. USB-only operation with Promote Control is fully supported.

The CN3 shutter cable is compatible with the following cameras:
Canon 1D Mark III, 1Ds Mark III, 1D Mark IV, 1Ds Mark IV, 5D Mark II, 7D, 30D, 40D, 50D

NOTE 1: Canon 10D, 20D, 5D Mk I, 1D/1Ds MkI and 1D/1Ds MkII cameras are not supported by the Promote Control HDR mode (with or without CN3 cable). Only a limited subset of basic features such as One-Shot, Time Lapse and Manual Hold are possible on these cameras, and would require a CN3 cable to be connected. The 1D Mark III, 1Ds Mark III, 5D Mark II, 30D, 40D, 50D cameras are fully compatible, including HDR mode.

NOTE 2: On Canon 5D Mark II and 7D the longest automatic HDR exposure is limited to 30 seconds due to mechanical Bulb mode activation. A future Promote Control firmware update will prompt to activate Bulb mode manually as required. At this time using a higher ISO setting is recommended with Canon 5D Mark II and 7D if an exposure longer than 30 seconds is required in HDR mode.

FOR NIKON:
The N10 cable is compatible with the following cameras:
Nikon D3, D3s, D3X, D2X, D2Xs, D2Hs, D2H, D200, D300, D300s, D700.

CLICK HERE FOR FULL DETAILS OF THE PROMOTE CONTROL SYSTEM