After a bit of a crappy week, I was very pleased when this rosebud we picked from the garden decided to open up inside the house.
This gave me a great opportunity to try the D600 out with a macro lens, this time with Tamron 90mm f2.8 AF. Macro lenses are renowned for their sharpness, and are probably one of the few types of lenses that can out resolve the 24 megapixel sensor on the D600.
What I found was that indeed I could do extremely deep crops and have the photo still retain some sharpness. Here is a very extreme example. As you can see, definition is still retained.