I am facing a problem that I never had before. The focus is not good in this and many other photos that I took in the weekend and I do not know what the reason is. I used a D300s with an FX 17-35mm f2.8 and a SB-800. The flash was inactive for a long period of time and had previous problems with overexposure. I decided to make a new try this weekend and I am now very unhappy with the result. Most photos I took in similar situations have this kind of focus.
Is it possible to have an idea of the problem just by looking at the picture? It looks like a flash problem, a lens problem, a camera problem or a photographer problem (perhaps a badly calculated exposure)?
Thanks in advance.