| 摘要 |
A test pattern in form of a raster or the like is imaged in a camera onto a margin of a film frame. When the film frame is subsequently converted into a negative which is thereafter printed as a positive, the test pattern is printed in the margin of the photographic image on the positive. Should the image be blurred, it is possible to determine whether the cause of blurring occurred in the camera or during printing, by examining the test pattern which, if blurring occurred in the camera, will be sharp but will itself be blurred if the blurring of the image occurred during printing. The pattern can also be applied to the film frame by the film manufacturer or else in a pre-splicer prior to developing of the exposed film. A method, an apparatus and a pattern carrier are disclosed.
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