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观看放大照片和观看幻灯的投影影像不同。观看幻灯的投影影像时,需要与影像隔开一定的距离,而且影像不是固定不动的。但放大照片是固定的影像,因此要求有更大的精密度。这就要考虑到使用精密度较高的放大器材了。
The magnified images and the projected images of the viewing slide show are different. When viewing a projected image of a slideshow you need to be at a distance from the image, and the image is not stationary. However, magnifying a photo is a fixed image and therefore requires greater precision. This should take into account the use of higher precision amplification equipment.