The original Letter [1] contains a typographical error. Toward the end of the first paragraph of the right column on Page 4482 of the original Letter, it is indicated that element 6 of group 2 in the USAF 1951 resolution target was well resolved. However, it was erroneously indicated that its corresponding spatial resolution was 70.15 µm, while in reality, it was 140.31 µm. This correction does not influence the method, results, descriptions, and conclusions of the original Letter.