I only used it once indoors for testing, so it's practically new and unused. This is an adapter for attaching Leica M-mount lenses to SIGMA fp or Leica L-mount bodies. Compatible lenses: Leica M lenses Compatible camera mount: Leica L mount 【Internal Reflection Measures】 ・A light-shielding plate is installed to prevent internal reflections. This also has the effect of concealing the camera's electronic contacts. 【Adapter Thickness Precision】 ・The adapter's thickness (flange back) is finished with high precision, so the lens's infinity mark and the actual infinity focus in photos will match with high accuracy. ・The more precise the adapter's thickness, the more the lens's distance scale will match the actual focus position, allowing you to utilize the distance scale for shooting. ・This is very advantageous when focusing is difficult using the viewfinder or monitor, such as when shooting night scenes. ※ Anonymous transaction, shipping included. ※ I will not respond to price reductions, holds, or exclusive listings. ※ Returns are not accepted to prevent product substitution. ■ Please be aware that this is a used item. Please be sure to check the photos before purchasing to confirm the condition of the product and make your purchase with understanding. ■ Please refrain from purchasing if you are sensitive to imperfections or seek perfection.