"Full-Frame or DX / APS-C?", Ken Rockwell

"Full-Frame or DX / APS-C?
Full frame today only gets you narrower depth of field and a larger viewfinder.
The images are the same. DX looks the same as full frame except for having a larger depth of field.
It's not 2007 anymore. The Japanese know how to make small things good. DX and APS-C cameras give results indistinguishable from each other 99% of the time.
See D7000 vs. FX and The D600 vs. D7100 and D7000.
The 1% of the time that there's anything different, it's not anything you'd see in real-life photography other than depth of field.
Choose your format based on how much weight you want to carry (DX is lighter), how big you want your finder (FX is bigger) and how much depth of field. you want (DX has deeper depth of field. because the lenses are shorter for the same angle of view)."

Ken Rockwell