EN / 中文
Hotline：
86135-3998-6755
EN 中文
News CenterSolutionsEncyclopedia

Extension ring

Time:06 Aug 2022
In the case of small objects, the working distance is often shorter than the minimum object distance (MOD) of the selected lens.

To be able to focus the lens nevertheless, the minimum object distance has to be reduced. This can be achieved by putting one or more extension rings between lens and USB camera, FireWire camera or GigE camera. The Imaging Source offers a low-priced set of extension rings and tubes for this purpose.

In contrast to a common belief, extension rings do not increase or decrease the depth of field of the lens. However, it is true that the image quality suffers, if the extension rings (or better tubes) are very long. 
+86 020-38312466
sales@zlkc.com.cn
Contact us
WeChat
Douyin

@ All rights reserved 2006-2025. @ GUANGDONG ZLKC OPTICAL CO.,LTD
粤ICP备11077438-4