Widefield Fluorescence Microscopes are standard optical imaging systems that illuminate the entire specimen at once and collect emitted fluorescence from all focal planes simultaneously. They use high-intensity light sources such as mercury, xenon, or LED lamps along with fluorescence filters to excite specific fluorophores within a sample. Since all parts of the specimen are illuminated together, widefield microscopes allow fast image acquisition and are well-suited for observing large areas and dynamic cellular processes.