would like to ask, sorry if OT, what shutter speed do you guys
use to capture buses?
Depends on the conditions and environment you are in. For night
shot, you need a long shutter speed like 1 second and low ISO for
non-grainy pictures. For day shot, you need a speedy shutter speed
setting like 1/500 for bright sunlight or 1/125 for dim sun light
and do remember to use low ISO.
A tip from me is that do a test shot at the environment you're
in so that you can know what to adjust