As a portrait lens, unexpectedly good, criticism mainly concerns the configuration. From what was expected: it is desirable to work on a fully open hole - after all, the M4 / 3 system with background blur is inferior to APS-C systems and even more so to FF, and comparable to portrait lenses from SLRs, Olympus ED 75mm f / 1.8, costs immeasurably. Compared in manual focus mode (I have an E-M10) through adapters with lenses: Helios 81N, Kaleinar 5N, Helios 44-3. The Olympus M. Zuiko Digital 45mm f/1.8 distorts less even in RAW, especially when it comes to chromaticity - manual lenses have it more pronounced.
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