An image processing method of an electronic device supporting a dual-image sensor system, the method comprising: detecting data via a first sensor and a second sensor disposed in the electronic device; and composing an image based on data detected by the first sensor and data detected by the second sensor, wherein the first sensor and the second sensor are color image sensors that detect the intensity and the color of an optical image, and convert the detected data into digital image data, and an amount of light detected by the second sensor is larger than an amount of light detected by the first sensor, wherein the first sensor detects Red, Green and Blue data using band pass filters, each of which enabling only one of the Red, Green, Blue wavelength regions to pass, and the amount of light detected by the first sensor may be approximately 1/3 of the amount of emitted light, and the second sensor detects data using band rejection filters, and wherein each of the band pass filters enables only a predetermined wavelength region to pass, and each of the band rejection filters removes only the predetermined wavelength region, wherein the first sensor detects data associated with a predetermined first wavelength region (Red), a predetermined second wavelength region (Green) and a predetermined third wavelength region (Blue), and the second sensor detects data associated with a predetermined fourth wavelength region (Yellow), a predetermined fifth wavelength region (Magenta) and a predetermined sixth wavelength region (Cyan), and an amount of light detected by the second sensor is two times greater than an amount of light detected by the first sensor characterized in that the image composition operation comprises: converting a color space of the data detected by the second sensor into a color space of the data detected by the first sensor; and composing the image based on the second sensor data of which the color space is converted and the data detected by the first sensor. detecting data via a first sensor and a second sensor disposed in the electronic device; and composing an image based on data detected by the first sensor and data detected by the second sensor, wherein the first sensor and the second sensor are color image sensors that detect the intensity and the color of an optical image, and convert the detected data into digital image data, and an amount of light detected by the second sensor is larger than an amount of light detected by the first sensor, wherein the first sensor detects Red, Green and Blue data using band pass filters, each of which enabling only one of the Red, Green, Blue wavelength regions to pass, and the amount of light detected by the first sensor may be approximately 1/3 of the amount of emitted light, and the second sensor detects data using band rejection filters, and wherein each of the band pass filters enables only a predetermined wavelength region to pass, and each of the band rejection filters removes only the predetermined wavelength region, wherein the first sensor detects data associated with a predetermined first wavelength region (Red), a predetermined second wavelength region (Green) and a predetermined third wavelength region (Blue), and the second sensor detects data associated with a predetermined fourth wavelength region (Yellow), a predetermined fifth wavelength region (Magenta) and a predetermined sixth wavelength region (Cyan), and an amount of light detected by the second sensor is two times greater than an amount of light detected by the first sensor characterized in that the image composition operation comprises: converting a color space of the data detected by the second sensor into a color space of the data detected by the first sensor; and composing the image based on the second sensor data of which the color space is converted and the data detected by the first sensor. converting a color space of the data detected by the second sensor into a color space of the data detected by the first sensor; and composing the image based on the second sensor data of which the color space is converted and the data detected by the first sensor.