https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Can-a-Speedlite-300EZ-be-used-on-a-Canon-EIOS-Rebel-T31i-camera/m-p/87652#M62666 <P>It'll only fire at max power, you can't control output level.&nbsp; If it'll even do that without taping the outer pins down.</P> Fri, 18 Apr 2014 14:18:28 GMT Skirball 2014-04-18T14:18:28Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Can-a-Speedlite-300EZ-be-used-on-a-Canon-EIOS-Rebel-T31i-camera/m-p/87650#M62665 Fri, 18 Apr 2014 13:14:48 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Can-a-Speedlite-300EZ-be-used-on-a-Canon-EIOS-Rebel-T31i-camera/m-p/87650#M62665 Rauco 2014-04-18T13:14:48Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Can-a-Speedlite-300EZ-be-used-on-a-Canon-EIOS-Rebel-T31i-camera/m-p/87652#M62666 <P>It'll only fire at max power, you can't control output level.&nbsp; If it'll even do that without taping the outer pins down.</P> Fri, 18 Apr 2014 14:18:28 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Can-a-Speedlite-300EZ-be-used-on-a-Canon-EIOS-Rebel-T31i-camera/m-p/87652#M62666 Skirball 2014-04-18T14:18:28Z