I ordered based on the reviews of 3 identical lenses. Us the result: 1 lens was very poor at the edges at all focal lengths. 1 lens was good and deserved at this value for money Stars 3-4 1 lens was over the entire area really well and deserves 4 stars. I have kept, sent the other two back for the best. My Recommendation: Also you buy more than one lens, test it and retain the best.