Fuji Pictrography PG 3500

Fuji Pictrography PG 3500, and Large Format Printer information: When the light or sound waves bounce off the subject and return to the camera, they give an accurate reading of the distance to that subject. For this type of picture, the exposure generally should be set to half of what would be required for the existing light. Flash can also be used in daylight to fill in foreground areas where shadows may be too strong. Automatic cameras wind the film into position when the back is closed and rewind the exposed film into the cartridge when all exposures have been taken.

Produced by the lens system, it is the magnification difference between minimum and maximum focal lengths. (Another type, the incident-light meter, measures the light that is falling on the scene or subject. A device called a shutter controls how long light strikes the film; the shutter speed can range from a small fraction of a second (1/1000 or less) to minutes or even hours. Screwed into the end of a lens, a uv filter eliminates most of the excess blue that appears in distant landscape photographs and secondarily provides a transparent protective cap for the lens.

In black-and-white photography, it is common to adjust the exposure and development of each picture individually to compensate for varying contrast conditions. The processing chemicals and conventional silver halide emulsions in instant film are combined in a self-contained paper envelope or within the print itself. The enlarger light shines through the negative, the enlarger lens focuses this light, and a large image of the negative projects onto the printing paper, which sits on a flat easel at the base of the enlarger.