Olympus G.Zuiko Auto-S 50mm f/1.4 - Olympus OM Mount

The G.Zuiko 50mm f/1.4 was the standard fast prime for the Olympus OM system. With a seven-element construction, it offers a bright viewfinder image and shallow depth-of-field capabilities. It is well-regarded for its smooth bokeh and central sharpness when stopped down, housed in a characteristically compact barrel that balances perfectly on OM-series bodies. Early 'G.Zuiko' labelled versions may have different coating characteristics compared to later 'MC' or 'Silnose' versions. When buying used, it is vital to check for yellowing of the elements, though this is less common than in some other brands' fast primes. SDS checks for oil on the aperture blades, which can cause sticking at high speeds. Inspect the rear element carefully, as it is quite large and prone to scratches if handled carelessly during lens changes.