Light Intensity Decreases. The light intensity decreases as

**magnification increases**. There is a fixed amount of light per area, and when**you increase**the**magnification**of an area,**you**look at a smaller area. Image brightness is inversely proportional to the**magnification**squared.Similarly, you may ask, how is the diameter of the field of view related to total magnification?

There is an

**inverse**relationship between the total magnification and the diameter of the field of view – i.e., as magnifications**increases**the diameter of the field decreases in proportion, so the diameter of field of view at different magnification can be**calculated**mathematically, using the formula.How does the field diameter change when magnification is increased?

As

**magnification increases**the**field diameter**decreases. refers to the ability of the microscope to stay nearly in focus when moving between objective lenses of different**magnification**.Is it better to increase or decrease the amount of light when changing to a higher magnification?

**Is it more desirable to increase**or to

**decrease light when changing**to

**higher magnification**?

**Increase light**because the objective lens opening

**decreases**with

**increasing magnification**, allowing less

**light**to enter.