https://community.usa.canon.com/t5/Speedlite-Flashes/Canon-MR-14-EX-11-Macro-Ring-Lite-compatibility/m-p/135802#M2549 <P>Will the Canon MR-14 EX 11 Macro Ring Lite Work with a Sigma 105 mm 1:2.8 DG&nbsp;Macro Lens with 58mm opening?</P> Sat, 14 Mar 2015 02:12:47 GMT SteveW 2015-03-14T02:12:47Z https://community.usa.canon.com/t5/Speedlite-Flashes/Canon-MR-14-EX-11-Macro-Ring-Lite-compatibility/m-p/135802#M2549 <P>Will the Canon MR-14 EX 11 Macro Ring Lite Work with a Sigma 105 mm 1:2.8 DG&nbsp;Macro Lens with 58mm opening?</P> Sat, 14 Mar 2015 02:12:47 GMT https://community.usa.canon.com/t5/Speedlite-Flashes/Canon-MR-14-EX-11-Macro-Ring-Lite-compatibility/m-p/135802#M2549 SteveW 2015-03-14T02:12:47Z https://community.usa.canon.com/t5/Speedlite-Flashes/Canon-MR-14-EX-11-Macro-Ring-Lite-compatibility/m-p/135882#M2550 <P>I don't know for sure, but I would think if you had a 58-67 step up ring and this Canon adapter it should work.</P><P>&nbsp;</P><P><IMG title="Capture.JPG" src="https://community.usa.canon.com/t5/image/serverpage/image-id/6997iF8B727EC92B0A26F/image-size/original?v=mpbl-1&amp;px=-1" border="0" alt="Capture.JPG" /></P> Sun, 15 Mar 2015 14:16:02 GMT https://community.usa.canon.com/t5/Speedlite-Flashes/Canon-MR-14-EX-11-Macro-Ring-Lite-compatibility/m-p/135882#M2550 jrhoffman75 2015-03-15T14:16:02Z