Hi to all, i want to know whether a third party flash fix to my canon 550D, can the shutter speed still adjustable to more than 1/200s or just like built in flash which maximum can go up to 1/200s only? some told me is need to look for those flashgun with ETTL then can simply adjust shutter speed on ur camera to maximum like 1/4000s. Please advise me as im going to have my 1st flash gun.