Just thought I would share my most recent blog post about of a wedding photographed with the Sony A7 series cameras http://www.lisabeaneyphotography.co.uk/2015/08/upwaltham-barns-wedding-niki-tom/
If you want to see a bit more and how I've been getting on with them use the search facility for Sony or look at the A7s A7ii categories. I will say that I have moved from the Canon 5dmk3 and now use the Sony cameras exclusively for my wedding and studio work.