Natural Science Forum / Physics / Optics / December 2005

A microscope is neither strong nor weak, its a microscope.  Usually techs
working on human spermatazoa use a .65 NA or greater objective such as  a
40X plan achromat or a 100X objective.  You may find phase contrast or
Differential Interference Contrast to be especially valuable unless you
stain the sperm.

Kevin Cunningham
SMS

As it was correctly stated already, 40x Plan Phase or DIC objective with a
10x eyepiece is plenty enough for this easy task. And you got the
dimensions wrong....sperms of the size you mentioned do not really exist
for humans (at least not the ones which are mature...) -or do you study
sperms of microorganisms :-))
rgds George Nyman

This person is a gnome intent on baiting the unwary.  This same
question is posted here periodically by this person.