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有读者拟购数码单反相机佳能EOS-5D或奥林巴斯E-1,但因两者影像传感器幅面大小不同(前者为135全幅面的36mm×24mm,对角线43.3mm,柯达制CMOS,1280万像素,2005年8月上市,当时报价人民币2.8万元左右;后者为4/3系统的幅面18mm×13.5mm,对角线22.5mm,柯达制CCD,500万像素,2003年6月上市,时价人民币2万元左右;两者均为不带镜头的机身价)而迟疑不决,更因后者有作为数码单反相机标准幅面的说法,因向编辑部征询意见。编辑部除向他介绍这两年在《照相机》上发表的各方面对这两架相机概况的文章外,还认为这是个普遍性的问题(影像传感器幅面大小对像质的影响和标准化问题),希望我写篇分析性的文章,以供众多读者参考。
Some readers want to buy digital SLR cameras Canon EOS-5D or Olympus E-1, but the two image sensor format size is different (the former is 135 full format 36mm × 24mm, diagonal 43.3mm, Kodak CMOS, 12.8 million pixels, listed in August 2005, was quoted at RMB 28,000 yuan; the latter is 4/3 system format 18mm × 13.5mm, diagonal 22.5mm, Kodak CCD, 500 million pixels, June 2003 Listed, when the price of 20,000 yuan; both are non-lens body price) and hesitated, but also because of the latter as a standard digital SLR camera format, due to seek advice from the editorial department. In addition to introducing him to articles on the overview of these two cameras published over the past two years in the past two years, the editorial board also considered it a universal problem (the impact of image sensor size on image quality and standardization issues ), I hope I write an analytical article, for many readers reference.