# Leica S-mount — Camera mount flange focal distance and adapter feasibility For Leica S-mount, flange focal distance (mm) is 53.00 mm; mount type is SLR; format is 45×30 mm; production years is 1996–, verified against its source on 2026-08-13. - **Mount name:** Leica S-mount _(verified: appears in the quote below)_ - **Flange focal distance (mm):** 53.00 mm _(verified: appears in the quote below)_ - **Mount type:** SLR _(verified: appears in the quote below)_ - **Format:** 45×30 mm _(verified: appears in the quote below)_ - **Production years:** 1996– _(verified: appears in the quote below)_ ## What the source says > Leica S-mount | 53.00 mm | SLR | 45×30 mm | 1996– ## What briansmith.com says > Leica S-Mount | 53.00 mm | SLR | 45×30 mm Source: https://briansmith.com/flange-focal-distance-guide/ ## Source - https://en.wikipedia.org/wiki/Flange_focal_distance - https://briansmith.com/flange-focal-distance-guide/ Last verified: 2026-08-13. Review by: 2028-08-12. Part of [Camera mount flange focal distance and adapter feasibility](https://referencesource.org/camera-lens-body-adapter-compatibility/).