Optolong L-eXtreme’s Substrate Change Notification

source:Optolong popularity:1587Release Time:2022-09-21

Optolong L-eXtreme’s Substrate Change Notification


Dear Valued Customer,

We’d like to inform you that the change of L-eXtreme filter, which also can be reference for your future purchases.

This change is part of our effort and commitment to continuous improvement of our products and process. If you have questions regarding this change, please contact with the Optolong stuff referenced below.


Detailed Information

PCN Tittle: Optolong L-eXtreme’s Substrate Change Notification

Description of Change: The substrate of L-eXtreme product has been changed. The change leads to the difference color of the filter on the surfaces between before version and after version.

Please refer to the following image.




Impact and Recommended Action: The effect of L-eXtreme is impregnable. Therefore, you can rest assured to use whatever previous or new version you have. The both are quality products.

Effective Date of Change: The affected L-eXtreme products changes began on June 21st 2022, audited by our production.


We apologize for this dalay notification of the above changes, and for any inconvenience caused. If you have any questions please feel free to contact us via [email protected] for support.

We really appreciate your constant support!




Optolong Optics Co., Ltd.

Date: 21th September 2022