How to clean dust from the CCD lens of a microscope
Why do single-lens reflex cameras need to frequently clean the microscope's CCD? Is it because of frequent lens changes? In other words, does dust easily get in when changing lenses? Do mirrorless cameras that cannot change lenses not have the problem of frequent CCD cleaning?
First, we need to understand where the dust on the microscope's CCD comes from. Usually, the majority of it is small dust particles that fly in when changing lenses. Secondly, it is debris generated by friction between internal parts of the camera body. After all, cameras are not assembled in a dust-free room, so it is normal for some dust to stick to them during normal use.
Cleaning the microscope's CCD is quite easy, and there's no need to be afraid. Moreover, it doesn't need to be cleaned every day. Usually, smaller dust particles can only be seen after stopping down the aperture to F16 or smaller. But ask yourself, how often do you take photos with a small aperture?
If you often take landscape photos, you may need to pay attention to keeping the CCD clean. However, for portraits or general daily use, even a small amount of dust stuck to it will not be noticeable.
Generally, dust is divided into dry dust and sticky dust. Dry dust can be easily blown away with a blower. Sticky dust requires cleaning supplies such as alcohol and cotton swabs to wipe off. Some agents also provide free CCD cleaning services, and even some models have built-in dust removal devices, such as the ultrasonic dust removal of Brand O and Brand C, and the dust shaking of Brand S. Mirrorless cameras indeed do not have the trouble of dust entering the CCD, but their body performance is quite different from that of single-lens reflex cameras.
