No longer a newbie, moving up!
I've been browsing dxo marks and I'm curious what the differences are between what is considered a professional and a semi professional DSLR. I compared the Nikon D800, the D4, and the Sony NEX-7 (because I own it). I was pleasantly surprised at how my NEX-7 faired against the full frame cameras but even more surprising is how the sensor of the D800, considered a semi pro camera, beat out the D4 in the dxo mark tests. Does the pro part just come from what other capabilities the camera comes with? I guess I didn't see any reason I would choose the D4 over the D800 for double the cost. Am I missing something?