For myself, I concluded: this is exclusively a portrait lens, they should not photograph people in full growth. My full-length photos in the studio came out terribly, just a terrible daub. Maybe I'm doing something wrong, maybe the camera (K-5IIs) is crooked and not friendly with the lens, but waist-length photos come out well, portraits are excellent, but full-height ones don't work :( that's why I only rate 3/5, I expected more.
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