This video gives a brief overview of how to adjust the field diaphragm on a compound microscope for viewing a specimen on a slide. This video can also be viewed at ...

Dark field microscopy can produce striking images with high contrast and color, but it can also suffer from some limitations, such as low brightness, low signal-to-noise ratio, or chromatic ...

- Abbe convergent lens N.A.1.25 with changeable diaphragm. - 12V/50W Cola illuminating system (input voltage 85V~265V), center adjustable field diaphragm.