After long hesitation between the 430 and the 580, my choice finally focused on the 580 to equip my EOS 5D first generation. We must also say that I had already acquired the 270EX for light dépalcements (if only there was a small flash of the type on the EOS 7D 5D series). My first impressions are excellent, the rendering is beautiful with a nice white balance good homogeneity over the whole of the image, so long focal small (white balance to auto or flash, flash transmits color temperature in unit). The rendering of the bounce flash is surprising efficiency on a white ceiling. I qq revives bit with the photo 'family' inside. It remains the choice of 430 or 580 150 euro difference. The construction of the 580 is more robust with seals against dust and provides additional features such as strobe or wireless flash 'master'. Personally it was not my choice criteria, but you will not be disappointed with this product.
Thank you to Amazon, always competitive and always perfect in deliveries and choices of partenaires.Canon - Flash Speedlite 580 EX II