You'd definetly need a 35mm adapter (brevis, redrock, letus, sgpro) to use that lens. But since macros have shallow focus already just pick up a video cam specific macro lens (also called an achromat) if you don't intend on getting into the whole 35mm thing if your not gonna get a full lens kit and constantly care about DOF. Redrock and cinevate both make video camera specific macros in the xha1's 72mm thread size, I'm sure other companies do too, but I don't know of them because I just use the one that used to be on my brevis.