B4 口 -> M42 螺口 -> A口转接环 . 自己看, 或留言好了.

micromsg-1473120951560-2 micromsg-1473042487864-2 micromsg-1473041866501-2 micromsg-1473041999728 20160910_181630 20160910_181552-2 20160910_181518micromsg-1473229435656-2 micromsg-1473229499383 micromsg-1473546995175-2 micromsg-1473547112798-2 micromsg-1473547328299-2