Yes, the Canon Remote Switch RS-80N3 would be compatible for use with all versions of the Canon EOS 5D-series DSLR camera (including the original Canon EOS 5D, the 5D Mark II, 5D Mark III, 5D Mark IV, 5DS, and 5DS R DSLR cameras).
Pixel Digital Wireless Remote Shutter Release Switch N3 Compatible with Canon 5D Mark-III/Mark-IV 5D R5 R5C 10D 1DX 1DC 1DS 1D 5DS 5DSR 20D 6D 7D-Mark-II 7D 50D 40D 30D D60 D30 D2000 Replaces RS-80N3 4.3 out of 5 stars 2,275
Camera Remote Control Wireless Shutter for Canon EOS RP, R6, ROS RP, Rebel T6, T7, T5, T3, SL2, 5D Mark II, 5d Mark iii, 5d Mark iv, 6D Mark II, 7d Mark ii, 7D Series, 5D Series; for Fujifilm X-T3 1,269 Canon EOS 1D X: Canon EOS 1Ds Mark III: Canon EOS 200D Mark II: Canon EOS 250D: Canon EOS 40D: Canon EOS 450D: Canon EOS 500D: Canon EOS 50D: Canon EOS 550D: Canon EOS 5D Mark II: Canon EOS 5D Mark III: Canon EOS 5D Mark IV: Canon EOS 600D: Canon EOS 60D: Canon EOS 650D: Canon EOS 6D: Canon EOS 6D Mark II: Canon EOS 700D: Canon EOS 70D: Canon
Canon EOS 5D Mark III Canon EOS 7D Mark II Canon EF 300mm f/2.8L IS USM Canon EF 100-400mm F4.5-5.6L IS II Canon PowerShot SX40 HS +13 more Reply Reply with quote Reply to thread Complain
. 80 466 71 152 80 302 452 131

canon 6d mark ii or 5d mark iii