sony 55mm f1.8 sonnar t fe za full frame lens - fixed (renewed) sony sel55f18z sonnar t* fe 55mm f1.8 zathis compact, high-performance 55mm full frame format mid-range zoom lens has been specifically designed bring out the full performance potential of the ?7-series full-frame e-mount camera bodies. true to the "sonnar" concept, the sel55f18z offers superior sharpness and contrast in a compact lens.