Pentax Magnifier FbThe Pentax Magnifier Fb slips on to your compatible Asahi Pentax SLR and provides a magnified image of the central viewfinder helpful for macro work or whenever precise focus is critical. Flips out of the way for normal viewing. In excellent condition, with case. This item fits Pentax autofocus SLRs (except the 645N) and, theoretically, any Pentax DSLR but check your manual to be sure.