Specs :

• C1: Canon EOS 1100D(Rebel T3), 600D(T3i), 60D, 550D(T2i), 500D (Digital Rebel T1i), 1000D (Digital Rebel XS), 450D (Digital Rebel XSi), 400D (Digital Rebel XTi), 350D (Digital Rebel XT), 300D (Digital Rebel), Canon EOS 30, 33, 50, 50E, 300V, 300, 3000…etc
• C3: Canon EOS 1D X, 7D, 50D, 40D, 30D, 5D, 20D, 10D, 5D Mark II, 1D Mark IV, 1Ds Mark III, 1D Mark III, 1D Mark II N, 1Ds Mark II, 1D Mark II
• N1: Nikon D300S, D3X, D3, D700, D300, D200
• N2: Nikon D80, D70s
• N3: Nikon D5100, D3100, D7000, D5000, D90