IF YOU HAVE AN SLR OR DSLR CAMERA AND OTHER MAKER/MOUNT LENSES, THE PBL MOUNT ADAPTERS ALLOW YOU TO USE YOUR LENSES ON THE FILM/DIGITAL CAMERA BODY. SHARING LENSES HAS SOME DISTINCT ADVANTAGES. CERTAIN PRIME LENS JUST CAN'T BE REPLACED, AND YOU SAVE COST OF PURCHASE LENSES. ­PBL OFFERS A RANGE OF ADAPTERS FROM LARGE FORMAT TO SMALLER FORMAT DIGITAL ADAPTERS. ADAPTING LARGER FORMAT LENS, I.E., LARGE FORMAT - MEDIUM FORMAT, MEDIUM FORMAT - 35MM, EXCELLENT EDGE-TO-EDGE SHARPNESS; AND THE SMALLER 24X36 MM IMAGE FIELD HELPS MINIMIZE THE EFFECTS OF LENS DISTORTION AND ABERRATION.