# Update History

<table border="1" id="bkmrk-date-event-2023-10-1" style="border-collapse: collapse; width: 100%;"><tbody><tr><td style="width: 16.0494%;">Date</td><td style="width: 83.9506%;">Event</td></tr><tr><td style="width: 16.0494%;">2025-06-01</td><td style="width: 83.9506%;">Lens clarification and numbering update. Lxxx\[-yyy-aaa\]\[-bbb\]

- xxx - Lens ID
- yyy - Focal length
- aaa - Lens mount (CS, M12, ...)
- bbb - Filter 
    - **VIS** - Band Pass 380-650nm, OD=2
    - NF - No filter
    - NIR1 - Long pass 850nm filter

</td></tr><tr><td style="width: 16.0494%;">2025-06-01</td><td style="width: 83.9506%;">If no filter specified for **CS** or **C-mount** lenses, assume **NF** lens option.

</td></tr><tr><td style="width: 16.0494%;">2025-06-01</td><td style="width: 83.9506%;">If no filter specified for **M12-mount** lenses, assume **VIS** lens option.

</td></tr></tbody></table>