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M12 Extension Rings, made of blackening aluminum materials, is placed between the M12 small lens and the lens holder, to fix the lens tightly in a precise position when it has reached the suitable Back Focal Length and the camera has reach the clear image. So, this M12 extension rings is to help adjust the focusing of the lens and fix this place.
Compared to other methods, such as using M12 Springs, glue or plastic M12 rings, the aluminum ring can help the lens fix the lens more tightly and keep the lens in the precise optical axis centre when work in a rough environment.
This series of M12 Rings is very customized for specified application or requirements. Our standard size is 2mm, 3mm, 4mm and 12mm height for choice.
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LenOpTec has been trying to develop various optical accessaries for different applications or to help reach some expected functions.. Based on customer's special applications or devices, we are trying to offer the integrated optical solutions, not only to control the costs for different parts, but also to reach the best performance for the project. Not all products will be shown on the website, if you have any other requirements for lenses and accessories, please contact us anytime. We will reply your inquiry in 24 hours in work days.
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