The blackened area that you see would be the area that was exposed, and because of the aperture frame, the clear area around the edge was not exposed.
Mr. McCloy. Yes.
Mr. Shaneyfelt. And this edge between the dark and the light then becomes the shadowgraph of this aperture of the camera.
Mr. Eisenberg. Your Commission Exhibit 753 illustrates that shadowgraph, or actually shows that shadowgraph, Mr. Shaneyfelt?
Mr. Shaneyfelt. That is correct, the charts were printed to show the entire negative and reproduce the shadowgraphs of Commission Exhibit 749 and Commission Exhibit 752.
Mr. Eisenberg. Could you refer now to that chart?
Mr. Shaneyfelt. Yes, sir. Referring to the chart then, the examination was made by comparing the edges, not only for size but general contour, and I have marked with numbers from 1 through 8 some of the more outstanding points of identification.
The eight points are not all that accounted for the identification. The identification is based on the fact that not only those eight points but every place else is the same on both negatives.
Mr. Eisenberg. And the contours are also the same?
Mr. Shaneyfelt. The contours are the same, yes.