Among all prime lenses of the 1.4/50 class, tested by us so far, the chromatic aberration was corrected the best by the Canon, which, at the maximum relative aperture, reached the level of 0.08% and then decreased sharply to 0.06% on stopping down. The worst was the Pentax with the CA level increasing from 0.10 to 0.17%. The average result, obtained by the Sony, oscillated near 0.13%. The Nikkor occupies the second place right behind the Canon because in its case the aberration increases slightly on stopping down the aperture from 0.09 to 0.11%. It should be emphasized that such a level is not bothersome and we consider it to be medium.
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