![]() ![]() Using a 28-70mm EF lens, the Mark III produces its best results at f/6.3 at 70mm.Ĭlick on the image above to view the full resolution file We analyze the images with Imatest, image evaluation software. The camera is mounted on a heavy tripod, and we shoot several images at a variety of apertures and focal lengths. We test resolution by photographing a standard ISO resolution chart under controlled lighting. The Canon EOS-1D Mark III has a APS-H-sized 10.1-megapixel CMOS sensor. ![]() However, when using the Faithful picture style, the camera is much more neutral in terms of saturation and produces far more accurate colors. With noise reduction on, it oversaturates the image with a score of 106.4 percent and a mean color error of 8.66. The Standard picture style produces larger errors. Most of the Mark III's pairs are close together, indicating good accuracy. The distance between the square and the linked circle indicates the amount of deviation from the ideal. The ideal colors are represented by squares, and the Mark III's renditions with corresponding circles. Saturation increases with distance from the center. The white center corresponds to zero saturation, including black, white, and shades of gray. The vertical rectangle near the center is the original tone of the chart. In each color tile, the outer square represents the camera's produced color, while the inner square shows the ideal corrected for luminosity. The matrix of squares shows the Mark III's reproduced colors compared to the original tones of the GretagMacbeth chart. To illustrate the results, Imatest generates two charts. The results compare well with competing DSLR cameras. ![]() These results were produced with the "Faithful" picture style, at ISO 100, with Noise Reduction off. The Canon EOS-1D Mark III delivers excellent color accuracy, with 99.32 percent saturation, and a mean color error of 5.69. To test how well cameras approach this ideal, we photograph a GretagMacbeth color chart under standard lighting, and analyze the image with Imatest software. The ideal camera records colors accurately with the same saturation and tint as the subject. ![]()
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