As can be seen here, the bellows are hardly in use though the lens is quite a distance from the body. The distance can be approximately double from the sensor of what it is here. The Leica M 240 with Leica R-to-M adapter, Leica R bellows (Model No. 16 880) and Leica 50mm Summicron-R f/2.0. On a Leica tripod.