Start here · Essential guide
Contrast in Microscopy: Why It Matters as Much as Resolution
Learn how contrast differs from resolution and magnification, why transparent specimens vanish, and which contrast techniques reveal them under a microscope.
Choosing and Using a Microscope
Contrast Techniques
Brightfield, dark field, phase contrast, polarized light, DIC, fluorescence and DIY Rheinberg and dark field stops.
Brightfield vs Phase Contrast Microscopy
Brightfield vs phase contrast microscopy compared: how each makes contrast, what specimens suit them, phase contrast's drawbacks, and adding phase to a hobby scope.
Dark Field Microscopy: Advantages and Disadvantages vs Phase Contrast
The advantages and disadvantages of dark field microscopy, how it compares with phase contrast and bright field, and which specimens and equipment suit it best.
DIC (Differential Interference Contrast) Microscopy Explained
What DIC (Nomarski) microscopy is, how its prisms and polarizers create relief contrast, its pros and cons, how it compares with phase contrast, and hobby options.
DIY Dark Field: How to Make a Patch Stop for Your Condenser
How to make a darkfield patch stop for your microscope condenser: materials, sizing the stop for each objective, centering, setup and fixes for gray backgrounds.
Fluorescence Microscopy: How It Works and What It Shows
How fluorescence microscopy works: excitation and emission, the filter cube, fluorophores, what it reveals, limits like photobleaching, and safe options for amateurs.
How to Make Rheinberg Illumination Filters for Colorful Contrast
Make your own Rheinberg illumination filters from lighting gels and clear plastic: sizing the central disc, choosing colors, assembly, setup and troubleshooting.
Polarized Light Microscopy and Birefringence
How polarized light microscopy reveals birefringence: crossed polarizers, interference colors, compensators, specimens to try, gout crystals and phase contrast compared.
Transmitted vs Reflected Light Microscopes
Transmitted vs reflected light microscopes: how each lights the specimen, which samples suit them, contrast methods for each, and which type a hobbyist needs.
What is bright field imaging?
Bright field imaging is the standard microscope technique: light passes through the specimen, showing it dark on a bright background. How it works and its limits.
What is contrast in microscopy?
Contrast in microscopy is the difference in brightness or color between a specimen and its background. Where it comes from, why it matters and how to increase it.
What is reflected light used for?
Reflected light lets us see opaque objects. In microscopy it's used to examine metals, minerals, circuit boards, coins and other surfaces that light can't pass through.
What is the advantage of dark field microscopy?
The main advantage of dark field microscopy is high contrast on unstained, transparent and living specimens, and it can be added to most microscopes cheaply.
Related topics