what is a field of view?

Question

if i have a microscope with ocular magnification of 5x and an objective of 15x and 50x how do i find the field of view?

Answer 1

Field of View or Field diameter is simply the number of millimeters or micrometers you will see in your whole field of view when looking into the eyepiece lens.

The link provided below has a chart with various fields of view, eye piece lenses, total magnefication and field size, etc.

Answer 2

The field of view of a microscope is what you see down the eyepiece at any one time. It depends on the diameter of the lenses used as well as the mag.
For example, at very high mag., you might only see one cell, filling the whole image. but with a super-wide lens, you would see more (maybe a cluster of 10 cells), and at a lower mag., you would see more too.

The way to find the field of view is usually to look at something of a *known* size and check the diameter of the field. You get special microscope slides with a "ruler" on them for doing this.