![]() The Canon EOS Digital Rebel XT relies on an 8.0 megapixel, single-plate CMOS color sensor. When this is conducted, cameras that use 70 percent of their advertised pixels are considered "good," while 80-89 percent is deemed "very good," and anything exceeding 90 percent earns an "excellent" designation. This is done by recording a series of exposures of a resolution chart, and then importing the images into Imatest Imaging Software to analyze the results. We test each camera’s resolution to determine exactly how many pixels are being used to form the image. 13 x 19 prints made from the XT will appear superior to 6.3 megapixel images recorded with the Nikon D70, while providing the added opportunity to go even larger and maintain good image quality.Ĭlick on the above chart to view a full res. You can crop considerably and still get excellent letter-sized prints however, if you plan to print large, the Rebel XT will give you an edge. A 6.0 megapixel DSLR will make stunning, razor-sharp letter-sized prints and respectably sharp 13 x 19 inch prints (the largest you can print on consumer printers). For users who do not foresee printing larger than letter-sized (8.5 x 11 inches), you really don't need more than 4 or 5 megapixels. **Some recent film converts making the pilgrimage to the digital SLR realm are still struggling with dated questions like "are 8.0 megapixels really necessary for any ‘serious’ photographer or is it overkill?" To determine how much resolution is appropriate, users should recognize that the decision generally boils down to the photographer’s printing needs, balanced with their allotted budget. For each color tile, the outer squares show the XT’s recorded colors, while the inner square depicts the color corrected version (approximating an auto corrected version in a computer application) and the small, vertical rectangle in the center is the tonal ideal.Ĭlick on the above image to view a full resolution version (CAUTION: The linked image is very large!)]( ) The images were then imported into Imatest Imaging Software, to contrast the camera’s produced colors with the original colors on the chart. To test the color accuracy of the Canon Digital Rebel XT, we recorded several exposures of the industry standard GretagMacbeth color chart. Since anyone can alter the tonal values on a digital image using a software application, we determine the camera’s ability to record the scene. When we test the color capabilities of digital cameras, we are evaluating the accuracy on the reproduced tones. This can make the image appear more striking, but is certainly not a realistic representation of the setting. For many digital cameras, the tendency is to over-saturate colors, increasing the vibrancy of the scene. While digital prints will often exhibit an impressive color range, there is often a variance from the natural scene. ![]() ![]() When converting to the digital format from film, many photographers are skeptical of the color reproduction capabilities of digital cameras. ![]()
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