Summary: I've used this on both DX and FX format cameras. On a DX (Nikon D300) it is very sharp and the images have very nice contrast. On a full-frame FX sensor (I was using the D800), the outer edges of the image are not so crisp as the center portion.
Summary: I bought this lens for a used Nikon D70 that I bought on ebay, and it's been a good lens. I have only had a couple of instances where it threw up an error, but all it took was a removal and reattachment of the lens - and even then that hasn't happened very often.
Summary: I was looking for a do-it-all lens after I bought my D70 and took a chance on this lens. At $300 it's a great bargain. Yes, the focus is rather slow -- and noisy -- but photographic quality is still good.
Summary: I bought 28-200 G today to compliment the 50mm and 18-70 kit lens. I had some hope that the lens would be "good enough" and I'm very surprised at just how good this small lens is. I also tested the 24-120 VR. Call me crazy, but it seemed soft to me.
Summary: Vorweg mal die Einschränkungen: In dieser Preisklasse mus man sich leider mit dem fehlenden Blendenring, dem Kunststoff-Gehäuse ohne exakte Entfernungs- und Tiefenschärfeskala und einer herkömmlichen Mechanik (also ohne schicke Extas wie den SilentWave Motor für den Autofokus oder den VR-...