《摄影中常见的失误》（Common mistakes in photography）.docVIP

《摄影中常见的失误》（Common mistakes in photography） Any overexposed film is pale and lacking in contrast. The reasons for this problem are complex, including the possibility of slowing the speed of the films sensitivity control panel, the meter is not allowed: aperture contraction failure, shutter failure can occur such a problem. Over development will also increase the image density, but the image contrast will also be improved, which can be distinguished from it. When such a problem occurs, check the cameras sensitivity, check the meter, the aperture and the shutter, and see if there is any problem with the development. Have to shoot the film, if color reversal film can be processed; if the color film can consider increasing the exposure time and the amplification of the time to give the appropriate correction. Black and white can also be saved by thinning. /P P align=leftFONT color=#0033ccB film expired /B/FONT/P P align=left expired film shooting out of the low image contrast, gray shading fog, color also appears yellow green color. There are two reasons for this problem: first, the validity period marked on the film box has exceeded a long time; secondly, the film is stored in an environment with too high temperature before taking photos and rinsing. In particular has been taken without washing a latent image film, the most easily affected by temperature, and the emergence of the latent image fade. Therefore, the photographer needs to develop the habit of storing the film according to the prescribed conditions and to use it within the period of validity of the film, as soon as possible after taking pictures. Already photographed film, if the negatives are of poor quality, can be reproduced by properly contrasting and correcting color. /P P, align=leftFONT, color=#003399BFONT, color=#0033cc, average brightness, subject to less than /FONT/B/FONT/P The P align=left shows a dark density and a low density on the film in the photos and transparencies. The main question is: ca