The most advanced type of CCD sensor uses a shaded interspace to store and read the acquired charge - the so-called Interline Mask (a small covered area between the active pixels). After exposure, an instantaneous Full-Frame shift of the charge from the pixels to the amplifier occurs while the next frame is being loaded. The advantages are high frame rate, limited smearing (blurring), acquisition during readout, and the ability to create a fast electronic shutter. The disadvantage is the reduction of the light-sensitive area - the shaded part reduces the active pixel area ( when compensated by optics, e.g. microlenses, the sensitivity is reduced).
