Can I ask some photo guru about the 180 rule that is often mentioned on this board ? If I'm taking 30 fps video in 4 k I should be setting shutter speed at 1/60 correct ? Now if the conditions get darker and I need to decrease the shutter speed to get more light in, should I change to a lower frame rate. Also is it better to alter the shutter/iso in full manual or keep it in semi auto ? Sorry but these questions might seem absolutely dumb to some people ?