Wikipedia say ... ...The Pen series is a family of half-frame cameras made by Olympus from 1959 to the beginning of the 1980s. Aside from the Pen F series of half-frame SLRs, they are fixed-lens viewfinder cameras. In 2009, Olympus introduced the PEN EP-1, a Micro Four Thirds system digital camera which the company touts as the next-generation Pen camera...