Posts that relate to the Keyword: contrast

Working with the condenser aperture diaphragm

The condenser aperture diaphragm (or iris diaphragm) is used to control the contrast and resolution of an image. This article explains the usage of the diaphragm.

Advantages of Koehler Illumination

Koehler illumination offers a range of advantages over “critical illumination”. Illumination is more uniform, specimen heating is reduced as well as light reflections for photographic work.

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.

Types of Objectives

This article gives you an overview of different types of microscope objectives, but I must note that a particular objective can fall into several categories at the same time. For educational work, parfocal, achromatic, bright field objectives are very common.

Enhancing Contrast

This article briefly outlines some contrast enhancing techniques that are used in microscopy.