Although the four-component infinity-corrected digital microscope system is simple, its adaptability is poor. A seven-element system is the ideal choice if additional optical components need to be added to the optical plane in the application. Additional optics include additional mounting hardware to accommodate 57mm pitch, which enables optical filters, beam splitters, attenuation or in-line illumination to be incorporated into digital microscopes. Seven-component systems are commonly used in fluorescence microscopy or applications that require greater illumination and contrast. Online lighting ensures less noise in the system and reduces glare and ghosting to a greater extent.

It is important to note that 76.5mm is the recommended distance because these targets are infinitely corrected. However, if the distance is too short, the system may appear vignetting; if the distance is too long, the resulting image will be dark due to insufficient light.

The Digital Microscope System is a powerful optical tool for inspecting industrial and biological samples. They can be as simple or complex as the user would expect, from a four-component system to a seven-component system. A seven-component infinity correction system is an ideal choice when optical components need to be included in the optical path of the camera-objective system.