YN-622N will have full control in Remote Manual or TTL, in 3 separate groups. Manual power levels or FEC (flash exposure compensation) can be adjusted in full or 1/3rd stops. This allows ratios to be created when using TTL.

1. – Master on Top – With an SU-800, or Master flash unit (set to master mode), mounted on top of the YN-622N Transmitter, it will use the master units settings (Flash Mode / Power Output / FEC etc). The flash mounted on top of the Tx can be used in TTL / Manual / or Multi RPT mode.

2. – No Master on Top – Without a master device on top of the Tx, you can also set the FEC/Manual Output (1/3 or 1 stop) of 3 group A/B/C.

3. – Smart triggering – settings can be made directly on the flash unit itself  (equal to the current mixed mode of the YN-622c).

4. – FP HSS, Rear Curtain Sync etc –  1st Curtain Sync, Rear Curtain Sync, Auto FP HSS to 1/8000th, Red Eye Reduction, and Modelling Flash are all supported.

5. – AF Lamp (Auto Focus Assist Lamp)  (Can be disabled if not necessary).

6. – In TTL mode the YN-622N works in the way of Nikon CLS. That is each group is metering separately.

If you’re not familiar with the YN-622, the Canon version YN-622C were somewhat of a breakthrough in price and performance for inexpensive TTL radio triggers.

Bringing the convenience of remote flash control from the camera position, in both ETTL and Manual Power settings, to a very affordable level.

With a retail price around $80 a pair they were the lowest priced TTL capable radio triggers available, though still offering a lot of capability for that low price.

For those more technically inclined, the YN-622N have had to take full control of the remote speelight in ITTL mode, even while doing remote manual power setting.

So the slave flash is always set to ITTL, even for remote manual setting. This is more similar to the Phottix Odin (for Canon or Nikon), than the YN-622C for Canon, which are able to follow Canons own Optic Wireless protocol more closely.

Nikon have obviously made things a little more difficult though, so there is a pre-flash in remote manual use as well, and this is the same for the test fire button.