A hot shoe interface system for transmitting high speed data, comprising: a hot shoe portion including a set of contacts (101, 103, 108, 110) configured to communicate with a set of corresponding electrical contacts (201, 203, 208, 210) comprising: a first set of one or more electrical contacts configured to receive high speed data from a first device attached to the hot shoe portion; a second set of one or more electrical contacts configured to receive a power signal; a third set of one or more electrical contacts configured to receive low speed data from the first device; a hot shoe receiver including a number of contacts configured to couple with the hot shoe contacts comprising: a fourth set of one or more electrical contacts configured to provide the high speed data to a second device attached to the hot shoe receiver; a fifth set of one or more electrical contacts configured to receive the power signal; a sixth set of one or more electrical contacts configured to provide the low speed data to the second device; characterised in that the hot shoe interface system further comprises, in the hot shoe portion, a first set of optical interface terminals configured to receive optical data from the first device; and in that the hot shoe receiver further comprises a second set of optical interface terminals configured to transmit optical data to the second device. a hot shoe portion including a set of contacts (101, 103, 108, 110) configured to communicate with a set of corresponding electrical contacts (201, 203, 208, 210) comprising: a first set of one or more electrical contacts configured to receive high speed data from a first device attached to the hot shoe portion; a second set of one or more electrical contacts configured to receive a power signal; a third set of one or more electrical contacts configured to receive low speed data from the first device; a first set of one or more electrical contacts configured to receive high speed data from a first device attached to the hot shoe portion; a second set of one or more electrical contacts configured to receive a power signal; a third set of one or more electrical contacts configured to receive low speed data from the first device; a hot shoe receiver including a number of contacts configured to couple with the hot shoe contacts comprising: a fourth set of one or more electrical contacts configured to provide the high speed data to a second device attached to the hot shoe receiver; a fifth set of one or more electrical contacts configured to receive the power signal; a sixth set of one or more electrical contacts configured to provide the low speed data to the second device; a fourth set of one or more electrical contacts configured to provide the high speed data to a second device attached to the hot shoe receiver; a fifth set of one or more electrical contacts configured to receive the power signal; a sixth set of one or more electrical contacts configured to provide the low speed data to the second device; the hot shoe interface system further comprises, in the hot shoe portion, a first set of optical interface terminals configured to receive optical data from the first device; and in that the hot shoe receiver further comprises a second set of optical interface terminals configured to transmit optical data to the second device.