YongNuo have announced the YN660 speedlite, being the latest evolution in the very popular YN-560 range of manual speedlites, with recent models providing 2.4GHz remote manual radio transceivers built inside.
The YN660 build upon the previous YN560 IV, now providing 6 groups in the Radio Master mode, up from just 3 previously.
As well as boosting power output to a Guide Number of 66 meters (ISO 100, 200mm), which should now bring the YN660 fairly close to matching the top end Canon and Nikon Speedlites for output.
Other improvements include 20-200mm flash head zoom, lever locking foot, and updated buttons / main control dial.
The YN660 are basic manual only speedlites when used on camera. Though their main features / functions are the remote manual Radio Master and Slave modes.
Compatible slave flash / receiver units include –
Compatible transmitter / master flash units include –
Unfortunately the YN660 still do not provide a Radio Slave mode compatible with the YN-622 systems for Canon or Nikon.
For that you will need to look at the more advanced YN685 Speedlites (available for Canon at least at this stage).
USING SLAVE FLASH – YN660 / YN560 IV / YN-560 III
USING RECEIVER – RF-605
USING RECEIVER – RF-603 II / RF-603
USING TRANSMITTTER YN560-TX / MASTER FLASH – YN-660
USING MASTER FLASH – YN560 IV
USING TRANSMITTER – RF-605
USING TRANSMITTER – RF-603 II / RF-603
USING TRANSMITTER – RF-602
The YN660 provide an HV Battery Port (Canon style) for attaching external high voltage battery packs, as well as a basic PC Sync Port.
(Though unfortunately still no USB port for firmware updates).
Being a single firing pin speedlite the YN660 are universal for use on any camera, though they provide only manual power levels when used directly on the camera hotshoe (no TTL or HSS etc).