method:
1. Choose a clean area with less indoor dust and wear anti-static gloves.
2. Use professional air blowing to remove the dust that can be blown off first.
3. Use a professional cleaning brush to remove dust from the lens surface and gaps.
4. Fold the professional camera cleaning cloth unpacked for the first time several times, and gently wipe the dirt on the lens in one direction with its center. If the cleaning cloth you buy has edge sealing, please avoid cleaning the lens with the cover to avoid scratching the lens surface.
5. If there are stubborn stains, it can be used with professional lens cleaner: drop the lens cleaner on the cleaning cloth or the special cleaning rod for the camera, and wipe the wet part along the same direction on the lens surface until satisfactory results are achieved.
Prism, a transparent object surrounded by two intersecting planes that are not parallel to each other, used for splitting or dispersing light beams.
Prism is a polyhedron made of transparent materials (such as glass, crystal, etc.). It is widely used in optical instruments. Prisms can be divided into several types according to their properties and applications. For example, in spectral instruments, the "dispersion prism" that decomposes the composite light into spectrum is more commonly used as equilateral prism; In periscope, binocular telescope and other instruments, changing the direction of light to adjust its imaging position is called "total reflection prism", which generally adopts right angle prism.
