Hi guys!
Really need your help here. I've using a 30D with a 420EX.Everything has been doing fine till 2 nights ago.When I release the shutter,the flash fires,but when the image is taken,the flash is not recorded.Initially i thought it was the sync speed problem,so i tried with speeds from 1'' to 1/250,the same thing happens.Funny thing is when i use it with mirror lockup,the flash is recorded.When i use it with another non-canon flash,it works perfectly.Does anybody out there encounter the same problem?TIA!