Articles
2009-09-01
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
8. Vignetting
Vignetting is one of the aberrations which were supposed to be almost totally eliminated by using the Four Thirds system. However, the ZD 50 mm Macro model had a measurable level of it as, at the maximum aperture, it amounted to19% (-0.62 EV). On stopping down by one exposition value stop though, the vignetting becomes practically imperceptible (3%). What’s interesting, the Olympus F Zuiko, designed to work on full frame, behaves almost identically. At maximum aperture the vignetting reaches 18% (-0.58 EV) and on stopping down to f/2.8 it decreases to 5%. In this category and in the test conducted on a small 4/3 sensor it is difficult to distinguish between these two lenses.
| Olympus F.Zuiko Auto-S 50 mm f/1.8 |
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| Olympus ZD 50 mm f/2.0 ED Macro |
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