I have very little (actually close to no) studio experience. However, I wanted to use the S2 for some studio portraits. I don't have the CS lenses, so I understand that the lowest shutter speed that I can use is 1/125th. Now here is my question: How do I avoid motion blur when shooting with the 120mm and the 180mm, for which I would normally use at least 1/250th or 1/360th when shooting handheld? Are tripod / monopod the only solutions (other than 2 weeks without coffee)?