The Sigma at the Sony A 55.Der Sticker (compatible with A 33/55) used was drauf.Die information as would be in the product description well gemacht.Die mechanics feels good. The glass moves in a vertical position and not even out rein.Die optical characteristics I can not measure, only to the 100% view beurteilen.Die resolution / sharpness is generally and especially at the edge of hand better than the Tamron 18 - the 200.Und over the entire Zoombereich.Verzeichnungen only when shooting technical (linear) properties in the wide-angle slightly visible, and I may be on the PC korrigiert.Vignetten not erkennen.Da I record even movie scenes for me is the ease of the zoom ring wichtig.Im contrast to T 18-200 or even for Kit 1855 can bewegen.Makroaufnahmen largely smoothly the ring are a limited extent, if one considers the closest distance and nachhilft-up view. Conclusion: For use as a versatile travel lens fully fit and empfehlenswert.Preis / performance very gut.Lieferung and packaging as Amazon usual very good.