https://community.usa.canon.com/t5/Professional-Video/Aperture-control-issue-on-C500/m-p/201270#M144 <P>Hi, I just started to use a C500. I couldn't adjust aperture with a third party lens (irix 15 2.4 blackstone), the f value does't show up on the left bottom of screen. I tried several Canon EF lenses, all worked, no aperture control issue.</P><P>Is it any chance I can make working that wide angle lens (otherwise I need to sell it)?</P><P>&nbsp;</P><P>Thanks</P> Tue, 21 Feb 2017 10:31:31 GMT frici 2017-02-21T10:31:31Z https://community.usa.canon.com/t5/Professional-Video/Aperture-control-issue-on-C500/m-p/201270#M144 <P>Hi, I just started to use a C500. I couldn't adjust aperture with a third party lens (irix 15 2.4 blackstone), the f value does't show up on the left bottom of screen. I tried several Canon EF lenses, all worked, no aperture control issue.</P><P>Is it any chance I can make working that wide angle lens (otherwise I need to sell it)?</P><P>&nbsp;</P><P>Thanks</P> Tue, 21 Feb 2017 10:31:31 GMT https://community.usa.canon.com/t5/Professional-Video/Aperture-control-issue-on-C500/m-p/201270#M144 frici 2017-02-21T10:31:31Z