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The WR-R10 can also be used to control Nikon radio-controlled flash units such as the SB-5000 Speedlight.
FWIW I have to say I very rarely have a problem with old tech IR, and when I do I just use radio poppers in manual mode.
IDK, I have owned SB-50dx, SB-80dx, SB-800's and an SB-900. The wireless radio is nice, but it looks like Nikon keeps spinning obsolete technology in a $500+ USD flagship flash.I would have expected it to be LED based with active cooling and settings in the menu to control the color temperature of LED's.All this is; is another version of the SB-910 which will overheat after 10 bursts so you can wait 5 minutes for it to cool down and take another 10 bursts.