90 years of the Olympus company - Olympus F.Zuiko Auto-S 50 mm f/1.8 versus Olympus ZD 50 mm f/2.0 Macro
10. Focusing
The Olympus F.Zuiko Auto-S 50 mm f/1.8 is, of course, a manual instrument and you can focus only this way. For that purpose there is a comfortable, smoothly-working (even after so many years) ring. The Olympus lens is quite fast and taking photos at the maximum relative aperture, even while cooperating with the 4/3 sensor, we don’t get a very deep depth of field so we must be very careful with focusing. In the case of an object from the distance of about 5 meters the depth of field is about 0.5 meters long. On stopping down to f/5.6, so to the limit of the lens’s abilities, the depth of field extends to almost two meters.
Of course the new ZD 50mm f/2.0 ED Macro is equipped with the auto depth of field option. It is very accurate but, unfortunately, slow. Luckily we have also an apropriate manual focus ring so those, who are impatient, can focus manually.
