>>4481664Long focal lengths typically get pretty serious field curvature when focusing at 1:1. And you're right, you need tubes to hit 1:1 but that's an extra $20. Also, the Nikon 60mm macro is a pretty recent lens. As I mentioned, you want a macro made for copy work and that's typically a lens in the 50mm-60mm range. These have been designed for flat field curvature at the 1:2 to 1:1 range.
>>4481667I'd pick camera scanning over a Nikon scanner any day. I used to use a Nikon 9000ED.