数码单反营销中毒2006年2月下旬,在数码单反相机市场领域发生了一件令人奇怪的事情,那就是一贯被视为数码摄影技术巨头之一的佳能,推出的中级单反相机EOS20D升级产品EOS30D(图1),所使用的仍然是与20D完全相同的CMOS影像传感器。由于30D并没有像素数的提升,在其他方面虽说改进得 Digital SLR Marketing Poisoning In late February 2006, a strange thing happened in the field of digital SLR cameras, which is consistently regarded as one of the digital photography technology giants Canon launched the SLR camera EOS20D upgrade EOS30D (Figure 1), using exactly the same CMOS image sensor as the 20D. As 30D does not increase the number of pixels, although improved in other areas