Macro photography
I was talking to hunter last Friday about macro photography and a great, relatively inexpensive, device to take macro pictures with almost any lens. Essentially, the ability of a lens to focus on a close object is related to the focal length and the distance between the inflection point of the lens (point inside the lens where the image flips) and the film plane. It’s something of a funny relationship for modern lenses with multiple internal pieces of glass. However, the important thing to remember is that your ability to close focus depends on those two factors. ...