A method is proposed for compensating for the dark current of an electronic
sensor having a plurality of pixels with an individual dark-current
response, radiation for producing an image signal (BS) being directed from
a beam source (3) onto a detector arrangement (4) containing the sensor,
and a recording being taken with different clock-out rate (v) (integration
time) by reading the detector signal (S) present in the pixels of the
sensor, in which, before the beginning or after the end of the recording
with radiation, the sensor is read out without radiation with at least two
different clock-out rates (v.sub.1, v.sub.2) and at least two dark-current
signals (DC1, DC2) are thereby picked up for each pixel, in which the
dark-current signals (DC1, DC2) that have been read out are then used to
calculate a dark-current value (DV) of individual pixels of the sensor as
a function of the clock-out rate (v), and in which a correction is then
made, using the dark-current value associated with each pixel, to the
detector signal (S) with the dark-current signal superimposed on it in
order to calculate the picture value (PV).