Nowadays, with the cheapness and the reliability of unmanned aerial vehicles (ARPs or drones) the use of small sensors has been gaining space. With this, high-resolution commercial digital cameras are being used to obtain images in remote sensing. However, to use this data quantitatively it is necessary that these sensors be known. Therefore, the objective of this work was to propose a methodology to characterize, spectral and radiometric, commercial digital cameras that operate in the visible region of the electromagnetic spectrum. Thus, in the Spectral Characterization the camera sensitivity is determined for each wavelength of the incident electromagnetic radiation. In the Radiometric Characterization, a relation is established between the digital numbers obtained in an image, when the camera is illuminated by a source of electromagnetic radiation whose radiance is known. To test the proposed methodology the characterizations were performed for a Canon camera. For this, the facilities of the LaRaC, of the IEAv, were used. The spectral characterization was performed by the indirect method using a monochromator, a reference sensor with spectral response function calibrated. In the radiometric characterization, the relationship between radiance and digital numbers of the camera was evaluated using an integrating sphere and a spectroradiometer. The results obtained for the spectral characterization are consistent with the expected. The radiometric characterization showed that the behavior of the radiance as a function of digital number does not have a linear behavior.