A display system comprising a display apparatus and a photographing device, wherein the photographing device is configured to capture, at a shutter speed, images displayed by the display apparatus, and wherein display apparatus comprises: a display including a plurality of modular displays (600-1 - 600-9) arranged in a matrix form, each of the modular displays including a plurality of pixels arranged in a matrix form within the respective modular display, each of the pixels including one or more light-emitting elements; a driver configured to drive the one or more light-emitting elements of the pixels and a processor configured to: control the driver to drive the one or more light-emitting elements of the pixels of a first modular display among the plurality of modular displays (600-1 - 600-9), based on a first pulse width modulation, PWM, signal, control the driver to drive the one or more light-emitting elements of the pixels of a second modular display of the plurality of modular displays (600-1 - 600-9), based on a second PWM signal, wherein duties of the first and the second PWM signals are equal if the pixels of the first modular display and the pixels of the second modular display are to display a same grayscale, according to an input image; wherein a frequency of the second PWM signal is greater than a frequency at which a flicker phenomenon is perceivable by a human, wherein the frequency of the second PWM signal is less than a frequency corresponding to the shutter speed of the photographing device; wherein a frequency of the first PWM signal is greater than said frequency at which the flicker phenomenon is perceivable by the human and is greater than said frequency corresponding to the shutter speed of the photographing device. a display including a plurality of modular displays (600-1 - 600-9) arranged in a matrix form, each of the modular displays including a plurality of pixels arranged in a matrix form within the respective modular display, each of the pixels including one or more light-emitting elements; a driver configured to drive the one or more light-emitting elements of the pixels and a processor configured to: control the driver to drive the one or more light-emitting elements of the pixels of a first modular display among the plurality of modular displays (600-1 - 600-9), based on a first pulse width modulation, PWM, signal, control the driver to drive the one or more light-emitting elements of the pixels of a second modular display of the plurality of modular displays (600-1 - 600-9), based on a second PWM signal, wherein duties of the first and the second PWM signals are equal if the pixels of the first modular display and the pixels of the second modular display are to display a same grayscale, according to an input image; wherein a frequency of the second PWM signal is greater than a frequency at which a flicker phenomenon is perceivable by a human, wherein the frequency of the second PWM signal is less than a frequency corresponding to the shutter speed of the photographing device; wherein a frequency of the first PWM signal is greater than said frequency at which the flicker phenomenon is perceivable by the human and is greater than said frequency corresponding to the shutter speed of the photographing device. control the driver to drive the one or more light-emitting elements of the pixels of a first modular display among the plurality of modular displays (600-1 - 600-9), based on a first pulse width modulation, PWM, signal, control the driver to drive the one or more light-emitting elements of the pixels of a second modular display of the plurality of modular displays (600-1 - 600-9), based on a second PWM signal, wherein duties of the first and the second PWM signals are equal if the pixels of the first modular display and the pixels of the second modular display are to display a same grayscale, according to an input image; wherein a frequency of the second PWM signal is greater than a frequency at which a flicker phenomenon is perceivable by a human, wherein the frequency of the second PWM signal is less than a frequency corresponding to the shutter speed of the photographing device; wherein a frequency of the first PWM signal is greater than said frequency at which the flicker phenomenon is perceivable by the human and is greater than said frequency corresponding to the shutter speed of the photographing device.