Colorimetric and colorimetric measurement methods for manual printing of photographs (Method for measuring colorimetric and density)

摘要

The present invention relates to a colorimetric method for manually printing a photograph to adjust the color density and contrast of an exposure transmitted through the film when the photograph is manually printed in a dark room so as to be printed in the most appropriate color, As regards the method,;And a control means for changing the size of the transmission hole through which the light is transmitted to the light diffusion tube of the probe connected to the measuring device in measuring the color density and the lightness of the exposure transmitted through the film at the time of printing the image, Is changed according to the size of the face of a photograph which is to be printed and passed through the exposure of only the face portion passing through the film to obtain the average value of the color density and the lightness of the entire face.