ON THE OPTICAL BENCH: In POP PHOTO's exclusive SQF tests, the lens exhibits sharpness and contrast in the Excellent range at 75mm, and in the Very Good range at 200mm and 300mm. The performance is above average for this class of long tele kit zoom. Even better: in DxO Analyzer tests, the lens shows stellar distortion control, with Imperceptible barrel distortion at 75mm (0.02%), and only Slight pincushion distortion at 200mm (0.12%) and 300mm (0.14%)-surprisingly good numbers. Light falloff is gone from the corners by f/5.6 at 75mm and 200mm, and by f/6.3 at 300mm-also above average. At the lens' uniform close-focusing distance of approximately 55.5 inches, its maximum magnification ratios ranged from 1:14.2 at 75mm to a satisfying 1:3.7 at 300mm.