Most modern black-and-white films, called panchromatic films, record the entire visible spectrum.^[1]:157 Some films are orthochromatic, recording visible light wavelengths shorter than 590 nanometers,^[1]:158 in the blue to green range of the spectrum and are less sensitive to the longer wavelength range (i.e. orange-red) of the visible spectrum.^[3] Black-and-white photography is considered by some to be more subtle and interpretive, and less realistic than color photography.^[1]:5 Monochrome images are not direct renditions of their subjects, but are abstractions from reality, representing colors in shades of grey. In computer terms, this is often called greyscale.^[4] Black-and-white photography is considered by some to add a more emotional touch to the subject, compared with the original colored photography.^[5]