I changed from my Nikon D3 to this and no looking back , I love been able to customize all the controls for on the body not having to always go into the menus. Viewfinder is terrible! 2 battery's last me almost 2000 shots and 2 cards is a must. Very fast and very solid build. I have the 14-140 everyday lens plus 25 (50) and the 45mm (90) beautiful lenses and so small . 8 out of 10 for this camera I'm hoping the mark 2 will have a better viewfinder.