The falcon eyes high speed receiver rf-q830lc-r supports both manual and automatic ttl communication with the camera. the lighting values for each of these groups can also be set individually. further, with the e-ttl radio trigger set, ev corrections, sync-mode (1st/2nd curtain, high speed sync etc.), zoom settings and flash bracketing mode, can be set via the camera menu. the supplied cable works with 3.5mm ports. if your studio flash unit has a 6.3mm port, we recommend adapter 292221 (see optional accessories). Specifications falcon eyes high speed receiver rf-q830lc-r for canon! wireless fsk2.4ghz system. the rf q830lc-r is equipped with an lcd display. adjustable in three groups, 7modes and 30 channels. flash mode e-ttl, ttl, m, multi-flash. suitable for hss 1/8000s. 100 meter range. speedlites can be placed on the receiver. auto save setting support in live view The falcon eyes rf q830lc-r is suitable for canon cameras and/or speedlites, but can be used in combination with the falcon eyes speedlites as well. This triggerset is not compatible with: