With a 45-foot range and a 45 degree camera vertical adjustment, the transmitter is adaptable for most vehicles, SUVs and RVs.

ENGADGET: Wireless Back-Up Camera for the Magellan RoadMate checks your six

"AF Limit Mode" can adjust the range of auto focusing and "Shutter Priority AF" offers faster focus adjustment by stopping the live view to increase the speed of the auto focusing.

ENGADGET: Sigma DP3 Merrill packs a Foveon X3 sensor and a fixed F2.8, 75mm-equivalent lens