Low-power objectives on conventional laboratory microscopes are the shortest or second-shortest objective lenses. Low-power objective lenses often increase the microscope’s magnification by 10x.
A 10x magnification ocular lens is added to the typical laboratory microscope. The overall magnification power can be calculated by multiplying the ocular magnification by the objective magnification. Therefore, the total magnification of the ocular lens and low-power objective is 10 × 10 = 100x. The scanning objective is a smaller objective than the low-power objective.