| http://www.w3.org/ns/prov#value | - ta read by said reading means on the basis of correction data; and controlling means for setting the correction data used for the shading correction wherein, when the film to be read is a negative film, said controlling means sets the correction data on the basis of data obtained by reading an unexposed portion of a film corresponding to the negative film to be read, while in the case of a positiv
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