英语翻译The two processes produced very different results.The da

英语翻译
The two processes produced very different results.The daguerreotype was a unique image that reproduced what was in front of the camera lens in minute,unselective detail and could not be duplicated.The calotype could be made in series,and was thus the equivalent of an etching or an engraving.Its general effect was soft edged and tonal.