Have let myself be guided by the positive reviews of the purchase. Externally, the microphone makes a solid impression. Also, the battery-free operation is a reason to buy. However, the performance is not convincing. I used the microphone to a Canon EOS 600D. The sound quality is my feeling no better than the internal Micro. On top of a very strong background noise, which probably is also due to the preamplifier my camera. Despite the low level the noise does not disappear. Overall, I would not recommend this product (even if it is advertised) in conjunction with a Canon 600D.