crop sensor vs full-frame

How to Use a Crop Sensor Lens on a Full-Frame DSLR

While reviewing the Nikon D600 recently, I had so many different lenses and cameras on my hands that I decided to conduct a little side experiment. I wanted to prove whether or not a decent crop sensor ultra-wide lens could compete with an exotic full-frame sensor ultra-wide lens, when used for landscape photography and/or the pursuit of optimal sharpness and image quality...