Traditional Culture Encyclopedia - Photography and portraiture - I saw those photographers in Game 7 of the NBA Finals. Their SLR has something with an antenna like a walkie-talkie. What is that?

I saw those photographers in Game 7 of the NBA Finals. Their SLR has something with an antenna like a walkie-talkie. What is that?

Belonging to a wireless remote control device. At present, professional SLR cameras supporting wireless transmission include Nikon D2X/D2Hs/D2H/D200 and Canon EOS 1D series /5D/30D/20D. The two wireless transmission devices are: Nikon WT- 1, WT-2/2A, WT-3 and Canon WFT-E 1. Use radio frequency technology.