The recently announced YongNuo YN-E3-RT are not even shipping yet, and already they have had a major feature update, with new firmware now allowing full (Gr) Group Mode functionality with pre 2012 model cameras!
This is a major advantage to the many Canon 5D II, 7D etc owners who otherwise have only limited functionality with the original Canon ST-E3-RT or 600EX-RT transmitters.
All older Canon camera models having a flash control menu, will now have full access to the Group Mode, with 5 groups which can be individually set to ETTL / Manual / External Auto / & OFF.
There is no control through the cameras flash control menu itself (as that is not possible on pre 2012 cameras), but all Group Mode settings can be made through the YN-E3-RT interface.
Group Mode functionality is a big advantage in the Canon RT system, as it allow access to 5 groups (instead of just 3), but most importantly it allows the mixture of ETTL and Remote Manual groups used at the same time, which can’t otherwise be done without access to the Group Mode. Any group can be set to set to ETTL / Manual / External Auto / or OFF. (Seen more clearly here).
Flash Exposure compensation (FEC) can also be set by group, which is generally much more intuitive than Canon’s old ratio selection.
Sync Speed – Another big advantage over the Canon ST-E3-RT with pre 2012 model cameras, is that they will now have access to full X-sync speed. Using the Canon ST-E3-RT X-Sync speeds are reduced by one stop. So that’s just 1/100th for the Canon 5D II (down from 1/200th).
So this update really expands the practicality of using Cameras like the 5DII with Canon’s RT radio system, which will be music to the ears of many wedding photographers, even if the 5D II have already been relegated to the second body.
And that is on top of the advantages for all Canon camera owners, including built in AF assist light, 2nd Curtain Sync (Only in M mode).
Hopefully the new YN-E3-RT’s USB port may get a work out with more new features added down the track –
Please see the original YN-E3-RT release here for full details on the coming transmitter.