A:Answer The D70 is a great quality camera overall and if you've noticed, it has a 'Macro' mode selection on the Mode dial. You didn't say what lens you were using, but if you have a decent Nikon kit lens like a 18-55, you can get some very good, sharp close0-ups with it.. Try different exposures like 200 ISO; F5-F6; good side lighting from a daylight type source or lamp. Use a tripod if possible which will give you the sharpest pictures. On a tripod, you can set up several feet away and zoom in for the close ups. Use a good photo editor like PhotoScape or Picasa to post process unless you have something better and know how to use it.
Good luck!