초점 이동/색수차

초점 이동: http://photographylife.com/what-is-focus-shift

색수차: http://toothwalker.org/optics/chromatic.html

구면수차: http://toothwalker.org/optics/spherical.html

자이델의 5대 수차: http://ko.wikipedia.org/wiki/%EC%9E%90%EC%9D%B4%EB%8D%B8%EC%9D%98_5%EB%8C%80_%EC%88%98%EC%B0%A8

비점수차와 상면만곡: http://toothwalker.org/optics/astigmatism.html

photographic optics: http://toothwalker.org/optics.html

http://www.pierretoscani.com/echo_telezooms_english.html#telezoomseng07

MTF 차트와 실제 해상력의 관계:http://www.dcmcafe.co.kr/bbs/board.php?bo_table=dcm_report&wr_id=969

보케1:http://www.imaging-resource.com/news/2013/09/11/understanding-bokeh-the-art-and-science-behind-the-beauty-of-blur-part-1

보케2:http://www.imaging-resource.com/news/2013/09/20/understanding-bokeh-the-art-and-science-behind-the-beauty-of-blur-part-2

보케: http://toothwalker.org/optics/bokeh.html