The canon wft e7b mkii is a dedicated wireless file transmitter for the canon eos 5d mark iii and 7d mark ii dslr cameras lightweight and compact the wft e7b allows you to wirelessly transfer images from the camera to a computer without the need for wires or cables and is a great addition to any photographers workflow the transmitter supports ieee 80211n which provides wireless image transfer at a speed roughly 25 to 3x faster than ieee 80211 ag the internal antenna offers a 150m wirel