The Cactus V6 is the World’s First wireless flash trigger that works ON ANY CAMERA (*with a standard hot shoe or PC Sync port) to control power output, wirelessly, of Canon, Nikon & Pentax’s system flashes ALL AT THE SAME TIME. Remote Power Control of Canon, Nikon & Pentax flashes Each flash model has its individual power level characteristics. We have profiled more than 30 popular flash models across a wide range of brands so that the V6 can precisely control their output levels. With this unique feature, photographers can remotely control the flash power of various flash models, even of different brands. Currently, more than 30 popular flash models from Canon, Nikon, Pentax, Metz, Nissin, etc. have been profiled & pre-installed on the V6. By selecting the pre-installed flash model on the Cactus V6 the photographer can remotely control the flash power output of the selected flash model wirelessly through the Cactus V6. If a flash model is not listed, the V6 may even learn its flash profile & then be able to control the power output of the flash. (See note on compatibility) Remote Power & Zoom Control of Cactus RF60 Wireless Flash The V6 can directly control a Cactus RF60 set to Slave mode using RF60’s built-in radio transceiver. Besides controlling power remotely in single & multiple groups, the V6 can also adjust the zoom level of the RF60 easily by pressing the adjustment wheel & swap control between power & zoom. Quick Power Adjustments Control is extremely easy & swift with the use of a selection dial & a combination of group buttons. V6 can control multi-group power output in just one quick slide which is faster than any manual system available in market. To adjust an individual group, simply press & hold the group button & scroll the adjustment dial at the same time & changes will be instantly made on the V6 RX unit. Absolute Power Control V6 can benchmark the power output of flash models with different GN. In Absolute Power mode, EV numbers can be used to specify an absolute light intensity, independent of the maximum power output of a flash model. TTL Pass-through The V6 transceiver comes with a multi-system shoe that supports TTL pass through. With TTL pass-through, the TTL flashes behave as they would when directly connected to the camera hot shoe.