Image sensor for detecting time-dependent image data, comprising multiple photodiodes and multiple electronic converters arranged in arrays and linked by switching elements (tx1, tx2,...), whereby each of said photodiodes and one of said electronic converters form a pair that generates a digital information dependent on light intensity on said photodiode, and whereby said switching elements (tx1, tx2,...) are arranged to selectively connect at least two of said photodiodes to one of said electronic converters and at least two of said electronic converters to one of said photodiodes, wherein three, four or more photodiodes are linked to the one electronic converter by the appropriate number of switching elements (tx1, tx2,...), which are configured for time-multiplexing to be driven such that the photodiodes will be switched to the electronic converter one after another, wherein each electronic converter comprises an electronic signal converter and an encoder, wherein the output of the electronic signal converter is dependent on the output of the photodiode linearly, logarithmically or according to some other function, wherein said encoder is configured to generate a digital information dependent on a relative difference or disparity between light intensities on two of said photodiodes, wherein two pairs of switching elements (tx1, tx2,...) are arranged and configured to selectively connect said photodiode and an adjacent photodiode to said electronic converter and said adjacent electronic converter such that before a switching event, said photodiode is connected to said electronic converter and said adjacent photodiode is connected to said adjacent electronic converter, and after said switching event, said photodiode is connected to said adjacent electronic converter and said adjacent photodiode is connected to said electronic converter, wherein the digital information depends on a relative difference between a first intensity and a second intensity, where the first intensity is the intensity of light at the photodiode and the second intensity is the intensity of light at the adjacent photodiode, and wherein when the input of the electronic converter is switched from the photodiode to the adjacent photodiode, then the encoder output will be a digital signal of the difference between the signal converter output corresponding to the second intensity and the signal converter output corresponding to the first intensity. wherein said encoder is configured to generate a digital information dependent on a relative difference or disparity between light intensities on two of said photodiodes, wherein two pairs of switching elements (tx1, tx2,...) are arranged and configured to selectively connect said photodiode and an adjacent photodiode to said electronic converter and said adjacent electronic converter such that before a switching event, said photodiode is connected to said electronic converter and said adjacent photodiode is connected to said adjacent electronic converter, and after said switching event, said photodiode is connected to said adjacent electronic converter and said adjacent photodiode is connected to said electronic converter, wherein the digital information depends on a relative difference between a first intensity and a second intensity, where the first intensity is the intensity of light at the photodiode and the second intensity is the intensity of light at the adjacent photodiode, and wherein when the input of the electronic converter is switched from the photodiode to the adjacent photodiode, then the encoder output will be a digital signal of the difference between the signal converter output corresponding to the second intensity and the signal converter output corresponding to the first intensity.