这部分是因为当时的照片大都是黑白的，而且尺寸很小，如果想放大则太贵。

This was partly because at the time photographs always came in black and white, and in a fairly small size, and to have them enlarged was far too expensive.

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所有展出作品全部是由黑白胶片拍摄并由作者手工放大而成，也表达了其本人对古典摄影工艺的热忱与执着。

All exhibited photographs were meticulously developed using classic techniques, using black and white film and manual enlargement, which displays his deep interest and talent for film photography.

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硬件系统主要由显微放大镜、CCD 黑白摄像头和计算机组成；

The hardware structure is mainly put up of the microscopical magnifier, a black and white CCD vidicon, and computer.

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