[CAMERA 1] During the Progressive Era, the camera recieved many improvements. Before these improvements, cameras had long _____________. This resulted from the process of making photos back then: first, _____________, like Iodine, is added to a____________ (Cu+Ag) to make it sensitive to_____________. Next, Hg & NaCl would be added to make the image__________. The final product was called a____________. While developing the image, the individual had to____________ (they even used metal rods and implants to do so). This long [first term] led to many of those old picture to have people who_____________

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