Phase Contrast vs. Bright Field Microscopy

These two microscopic techniques are suitable for different specimens.


Dirty microscope objective: Its effect on image quality

A dirty microscope objective significantly reduces the resolution.


The Condenser Aperture Diaphragm

In this post, the function of the condenser aperture diaphragm is explained. The purpose of the condenser is to concentrate the light onto the specimen, its diaphragm regulates resolution, contrast and depth of field.