https://community.usa.canon.com/t5/Speedlite-Flashes/Canon-Speedlight-430EX-III-RT-flash-cannot-get-it-to-fire-on/m-p/286309#M711 <P>I have a new 430EX III-RT speedlight which works fine on my Canon EOS M50 camera when placed on the hotshoe.</P><P>&nbsp;</P><P>But I cannot get the flash to fire on optical slave mode off camera. I have referred to Page 78 of the flash pdf manual over and over again, but the flash simply won't fire on optical slave mode. I have watched many YouTube videos about this and did many Google searches on this but cannot resolve this issue.</P><P>&nbsp;</P><P>I have the pop-up flash enabled on my Canon M50 camera. When the pop-up flash fires, the 430EX III-RT flash does not fire even when set to optical slave mode.</P><P>&nbsp;</P><P>What am I doing wrong? Or do I have a defective flash? Thanks!</P> Sun, 10 Nov 2019 17:27:13 GMT Casey415 2019-11-10T17:27:13Z https://community.usa.canon.com/t5/Speedlite-Flashes/Canon-Speedlight-430EX-III-RT-flash-cannot-get-it-to-fire-on/m-p/286309#M711 <P>I have a new 430EX III-RT speedlight which works fine on my Canon EOS M50 camera when placed on the hotshoe.</P><P>&nbsp;</P><P>But I cannot get the flash to fire on optical slave mode off camera. I have referred to Page 78 of the flash pdf manual over and over again, but the flash simply won't fire on optical slave mode. I have watched many YouTube videos about this and did many Google searches on this but cannot resolve this issue.</P><P>&nbsp;</P><P>I have the pop-up flash enabled on my Canon M50 camera. When the pop-up flash fires, the 430EX III-RT flash does not fire even when set to optical slave mode.</P><P>&nbsp;</P><P>What am I doing wrong? Or do I have a defective flash? Thanks!</P> Sun, 10 Nov 2019 17:27:13 GMT https://community.usa.canon.com/t5/Speedlite-Flashes/Canon-Speedlight-430EX-III-RT-flash-cannot-get-it-to-fire-on/m-p/286309#M711 Casey415 2019-11-10T17:27:13Z https://community.usa.canon.com/t5/Speedlite-Flashes/Canon-Speedlight-430EX-III-RT-flash-cannot-get-it-to-fire-on/m-p/286469#M712 <P>As far as I know, the M50 cannot control as a master without a controller such as the ST-E2.&nbsp; BTW, Optical slave mode symbol is the lightning bolt, not the "antenna" symbol which is for Radio mode.</P> Tue, 12 Nov 2019 08:35:22 GMT https://community.usa.canon.com/t5/Speedlite-Flashes/Canon-Speedlight-430EX-III-RT-flash-cannot-get-it-to-fire-on/m-p/286469#M712 diverhank 2019-11-12T08:35:22Z