hi from Malaysia

[weirdwired]

hi, i'm weirdwired a.k.a Shahril from Malaysia. just using ML for a month on my EOS 550D for still pictures. not try video features yet. got some issue regarding shutter speed and aperture limitation during photo-shooting. shutter speed can't go more than 1/200 and aperture can't go bigger than f/3.5 instead of f/1.8 with my EF 50mm f/1.8 II lens. same problem occur when using my Tamron SP AF 17-50mm f/2.8 XR Di II LD IF at 17mm. maybe some of the experts here can help me. thanks.