The Pixel King for Canon is a second generation wireless TTL trigger, with the TTL-control via Flash Control Menu (FCM); based on the Pixel Knight (first released in 2009). Same as the Pixel Knight, the King offers:
Several major improvement/enhancement of Pixel King has been made over the original Pixel Knight:
Like the Pixel Knight, it does not support the Canon wireless protocol (i.e.
it can not work as ST-E2/580EXII as the master to trigger 430EX flash in remote
mode), but instead it works by "fooling" the remote flash that it is mounted on
the camera hot-shoe. Vice-versa, the camera will work as if there a TTL flash
mounted on the hotshoe.
The body physical design is similar to the Pixel Bishop. It uses the 2.4 GHz frequency, and Pixel rate it as having a working range of up to 100 meters.
The Pixel King Transmitter provides 7 selectable channels and 3 different
groups. For power, both the TX and RX use two AA-sized batteries. Both the TX
and RX have an mini USB-socket to allow firmware updates, and also plug in
external 5V power supply . Both the TX and RX have a hotshoe mount. The RX
hot-shoe is for mounting remote flash/speedlight. However, the TX hot-shoe is
NOT a TTL pass-through shoe, and can not be used to mount an additional flash/speedlight
on top of it. Instead, Pixel has indicated that they plan introduce a optional
control unit (tentatively named "N-ETTL") that can be mounted in the transmitter
hot-shoe; likely to act as a Zone Controller.
Pixel King Receiver compatible with: