the S60 is a mid-range model, featuring a light aperture of 645 x 300 mm and accommodating the vast majority of applications. The S120 is twice as long as the S60, but weighs nearly the same. Its larger light aperture makes a great soft light even better. the S60, it is perfect for on-the-go mobile applications. S60 models are available in fully color tuneable and remote phosphor versions.