When registering images of objects with large range of brightness within the frame, exposure control should be performed for each elementary area of the frame. In well-known recorders, which are equipped with exposure devices that perform such control, multiplicative, additive and multifunction methods of image registration are used.The use of the multiplicative method leads to significant energy losses in the optical channel, which requires in the exponential parameters of the system (increase the effective shutter speed, increase the sensitivity of the sensor or additional amplification of output signal). The use of the additive method allows to narrow the dynamic range of the recorded optical signal and to reduce the effective shutter speed, but reduces the contrast of small images of the resulting image. The use of the multifunction method allows to suppress low-informative low-frequency components of the spectrum of the input signal, while reducing losses from image shift and reduce the contrast of images of small details.The use of the multifunction method allows to suppress low-informative low-frequency components of the spectrum of the input signal, while reducing losses from image shift and reduce the contrast of images of small details. The use of the multifunction method makes it possible to match the dynamic range of the recorder optical signal with the dynamic range of the recorder, while minimizing the impact of the disadvantages of the multiplicative and additive methods used independently.An expression for the scattering function of the image registration process of objects with a large range of brightness using the multifunction method is obtained. The influence of the parameters of the image registration process using the multifunction method on the scattering function of the multifunction mage is analyzed.With the masking coefficient KM=1, there is no compression of the dynamic range of the input signal. When 1<KM the contrast of low-frequency components of the signal spectrum is reduced, which leads to the appearance of a negative part of the scattering function of the resulting image. The case corresponds to a full equalization of their intensity. At negative values , there are negative values of the central part of the scattering function, which corresponds to the reverse of contrasts at low spatial frequencies.The expression can be used when conducting theoretical studies of the effect of the process of the multifunction method of registering images on the shooting efficiency.