# LENSLENGTH System Variable [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [System Variables](Help%20System/GSTARCAD/2021/System%20Variables/(System%20Variables).md) → [L](Help%20System/GSTARCAD/2021/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 | --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/L/LENSLENGTH%20System%20Variable--f8f03b52d7f0.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/L/LENSLENGTH%20System%20Variable--f8f03b52d7f0.md) · [GstarCAD 2018](../../../2018/System%20Variables/L/LENSLENGTH%20System%20Variable--f8f03b52d7f0.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/System%20Variables/L/LENSLENGTH%20System%20Variable--f8f03b52d7f0.md) · [GstarCAD 2020](../../../2020/System%20Variables/L/LENSLENGTH%20System%20Variable--f8f03b52d7f0.md) · [GstarCAD 2022](Help%20System/GSTARCAD/2022/System%20Variables/L/LENSLENGTH%20System%20Variable--f8f03b52d7f0.md)