i7 long, and fitting it over the lens in such a way as to shade it. See figure 2. Care must be taken not to move the camera after focusing, or to jar it during exposure; a jar will blur the picture and a small movement will bring it out of focus. … A good rule to follow in time exposures is as follows: — Place the camera in posi- tion ; pull off cap from the lens and focus on the ground glass ; put cap back, then fit plate holder containing plate in place, being careful not to move the camera; pull
Photography
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