Lens Rating Scale

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Ratings

Distortion and bokeh are included in the rating only if they are prominently good or bad.

1 Poor: Use only for creative purposes.

2 Fair: Noticeable quality shortcomings at most or all apertures.

3 Good: Will produce acceptable results if shot stopped down. Significant degradation of image quality at certain apertures and/or parts of the frame.

4 Excellent: Will produce professional results at most apertures with minor degradation at certain apertures and/or certain parts of the frame.

5 Outstanding: The very best. Equals or exceeds the performance of all other lenses of its focal length at every aperture.