Generally there are two kinds of extreme close-ups:
macros, and micros. Macros are photographs of tiny objects that
when viewed are
anywhere from about 1/4 (or 1:4) to exact size of the
subject (1: 1). Thus, if one were to photograph an insect like a fly, it
would be considered a macro if the fly in the picture
could be seen up to life-size as it would appear on a
developed negative or a non-enlarged digital view.
Micro shots are those where tiny subjects when
viewed appear beyond like-size. Microscopes enable us to view small
objects
by magnifying them beyond life-size.
Shown here are the four objective lenses mounted on a
turret. Each one has a magnification rating, the longest lens being the
most powerful. Multiplying
that rating by the rated magnification of the eyepiece
at the top end of the scope yields the overall magnification rating of the
resulting view.
Thus, if the eyepiece has a rating of 10x (magnification
of ten times life-size) multiplied by the magnification rating of the small
objective such
as 10X, yields a final microscopic image showing the
object as it would appear if it were 100 times its normal size.
Confused?
More to come shortly.
Marshall
