# LENSLENGTH System Variable [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [System Variables](Help%20System/GSTARCAD/2027/System%20Variables/(System%20Variables).md) → [L](Help%20System/GSTARCAD/2027/System%20Variables/L/(L).md) ## Function Description: The LENSLENGTH system variable is used to store the length of the lens in millimeters used in perspective viewing. | | | | --- | --- | | Type | Real | | Saved in | Drawing | | Initial value | 50.000 | --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/systemVariables_Lgsv/LENSLENGTH.html) · © Gstarsoft Co., Ltd.