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<blockquote data-quote="spb_stan" data-source="post: 644609" data-attributes="member: 43545">The YN685 N is not only compatible but&nbsp; actually is more powerful than the SB910 and SB5000 for about $500 less money. ISO 100 is 197ft and it focuses down to the field of view of 200mm.Safe in what way? Not likely to blow up but are your referring to the risk to the camera? Since it is self powered the only connections to the hotshoe is trigger control like and a data control line and ground. These terminals are isolated optically in the camera with optocouplers.The biggest advantage is price but the second is compatibility with the low cost YN622 Tx and TN622 transceivers so can be triggered and commanded from the camera up to 300 feet away, and can HSS sync to 1/8000 sec shutter speed. The 622 iTTL compatible RF radio controllers are great for either studio or outdoor use, so you do not have to&nbsp; have a flash on the camera&nbsp; to use Nikon CLS with radio link instead of optical commanders.I have 3 Nikon SB900's and 3 Yongnuo YN568ex N flash and use them interchangeably. The 568 does not have the internal RF receiver so it uses as YN622 transceiver to talk with the camera mounted 622tx transmitter. Getting a 685 means saving $50 on another transceiver so it is even a better bargain. The 568 is very similar to the 685 except as an earlier model does not have beam focusing to 200mm focal length, 105mm instead,&nbsp; and doesn;t have the built in receiver. Mine have been reliable and easy to use.</blockquote>

[QUOTE="spb_stan, post: 644609, member: 43545"] The YN685 N is not only compatible but actually is more powerful than the SB910 and SB5000 for about $500 less money. ISO 100 is 197ft and it focuses down to the field of view of 200mm. Safe in what way? Not likely to blow up but are your referring to the risk to the camera? Since it is self powered the only connections to the hotshoe is trigger control like and a data control line and ground. These terminals are isolated optically in the camera with optocouplers. The biggest advantage is price but the second is compatibility with the low cost YN622 Tx and TN622 transceivers so can be triggered and commanded from the camera up to 300 feet away, and can HSS sync to 1/8000 sec shutter speed. The 622 iTTL compatible RF radio controllers are great for either studio or outdoor use, so you do not have to have a flash on the camera to use Nikon CLS with radio link instead of optical commanders. I have 3 Nikon SB900's and 3 Yongnuo YN568ex N flash and use them interchangeably. The 568 does not have the internal RF receiver so it uses as YN622 transceiver to talk with the camera mounted 622tx transmitter. Getting a 685 means saving $50 on another transceiver so it is even a better bargain. The 568 is very similar to the 685 except as an earlier model does not have beam focusing to 200mm focal length, 105mm instead, and doesn;t have the built in receiver. Mine have been reliable and easy to use. [/QUOTE]

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