数码单反照相机的机身与其配套的标准镜头的组合,称之为“套机”。套机镜头俗称“套头”,在很多消费者心目中可能会是一个负面的概念—低档、做工差、成像差,显然这是先入为主所带来的“恶果”。2003年8月20日这是数码单反世界应该记住的日子,即佳能推出了全球第一款低端数码单反相机EOS 300D,这款产品的出现一改当 Digital SLR camera body and its supporting standard lens combination, called “kit machine.” The machine lens, commonly known as “hedging”, may be a negative concept in many consumers’ minds - low grade, poor workmanship, and poor imaging. Obviously this is the “evil result” brought by preconceptions. August 20, 2003 This is the day the digital SLR world should remember that Canon introduced the world’s first low-end digital SLR camera EOS 300D, this product appears to be changed