Speedlite Flashes, Studio Strobes and Radio Triggers with High Speed Sync or HSS
High Speed Sync flash or HSS is your DSLR’s ability to use a flash at shutter speeds faster than the camera’s native sync. Most cameras have a native sync of 1/250th of a second or less (for example Canon 6D has 1/180 sync speed which is somewhat slow), and anything faster than that is beyond the camera’s ability to sync the shutter with the flash. But if you happen to be in a situation that requires faster shutter speeds to effectively capture the action, or for other aesthetic reasons (for example wide aperture), then you will overexpose your image. However, high-speed sync flash and camera combination allows you to use the flash at higher shutter speeds.
There are many positives to working in HSS, the first of which is being able to control the ambient light and shoot at a shallow depth of field. It is a very liberating experience to shoot HSS and not having to worry about flash sync limitations, or the time of day. I feel like most photographers don’t want to have limitations when they are spending a lot of money on cameras and lights.
Obviously you can guess that the biggest and possibly only drawback to using HSS is the power drop-off at higher shutter speeds. If you are doing senior portraits, headshots, environmental shots, weddings, or things like that outside, you may have to run your speedlights at full power a lot more often, or combine speedlights in a single modifier, but generally it isn’t that big of deal. For some shooting situations you may also still have limits to the time of day.
Most recent flash speedlites like Yongnuo YN600EX-RT II, Yongnuo YN685, Godox TT685C, Pixel X800C, Meike MK-910 and many other support High Speed Sync. You just need to select the HSS mode on the speedlite or through the camera flash menu to be able to use fast shutter speeds. Also, if you are interested in off-camera lightning you will need HSS enabled radio triggers like Yongnuo YN622C II for Canon or Yongnuo YN622N II for Nikon, or Godox X1-C, Pixel King Pro…
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Shanny SN-E3-RT
Shanny SN-E3-RT is an affordable, reliable and robust device, suitable for use by a wide range of photographers who are seeking full ETTL capability at a fraction of the price being offered by the Canon alternative. This is yet another impressive release from the Shanny, and it is encouraging to hear that we are promised further additions to the Shanny line.
SN-E3-RT is a dedicated transmitter for the Canon RT wireless flash system. It is compatible with Canon and Shanny RT enabled speedlites and brings some important features which Canon ST-E3-RT transmitter lacks.
Shanny SN910TX
Shanny SN910TX is a dedicated trigger for the SN910EX-RF wireless 2.4 GHz speedlite flashes for Nikon DSLR cameras. Similar as using a SN910EX-RF as master, it is able to trigger SN910EX-RF flashes in three different groups. It also includes HSS mode, remote zoom control and an autofocus assist lamp, as was the case with the SN910EX-RF flashes.