I need to photograph small objects at a distance of 2-4 inches (5-10 cm) from the lens. I want a magnification of ~50 to 100. Photomicrography (using microscopes) is limited in the working distance from the objective; it needs to be <1 inch. Photomacrography is limited in the magnification; typically <10. I'd like a solution that terminates with filter threads (any size can be adapted) so I may attach a digicam. Suggestions? If there is a better forum in which to ask this question, just point the way... Thanks.