With each iteration of the Digital Rebel family, Canon raises the bar on image quality and camera features while lowering the introductory price. This iteration brings us the Canon EOS Rebel XTi / 400D, an entry level-priced DSLR with professional level image quality and capabilities. The EOS Digital Rebel XTi (USA), EOS Digital Kiss X (Japan) and EOS 400D (everywhere else) is easy enough for a beginner to use but powerful enough to get the job done for many professionals. In 18 months, Canon sold 1.2 million 350D/Rebel XT DSLRs. The 400D/XTi will take its place in the market. Note: Canon seldom discontinues updated DSLRs when new models come out. The old models are reduced in price for a period of time - and then become unavailable.
Leading the Canon EOS Rebel XTi / 400D's improvements list is the brand new Canon-designed 10.1 megapixel CMOS image sensor. Since this sensor retains the same format size (1.6x FOVCF), a more-dense pixel spacing is required. A denser sensor often results in lower image quality per pixel - and more noise. While the XTi does not deliver not the ultimate low light performance - its high ISO results are good. To accomplish this result, spacing between the on-chip microlenses is now approximately half that of its predecessor. A higher percentage of each pixel’s surface area is now sensitive to light. The output amplifiers have also been optimized. The second-generation, on-chip noise reduction circuit minimizes random noise and removes fixed-pattern noise. Canon digital SLRs have been renowned for their clean high ISO results. And, the new 400D is looking very good from this perspective. Remember, to properly compare ISO noise levels, the comparison exposures must be identical. The following images were shot in RAW format, output to 16-bit TIFF files, cropped & combined in Photoshop and saved as a very high quality JPEG image.
No comments:
Post a Comment