Fig. 4.5 The effect of inserting the wide side of the film into the scanner
Effet d'uneinsertion incorrecte du cache
Folge des Einlegens eines Blldes im
Querformat
Fig. 4.6a
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Fig. 4.6b
The film mounted in the slide frame is NOT square. For the entire film to be scanned, it is necessary to insert the slide with the narrow side of the film , the 24 mm side, entering first into the scanner. This is shown in Figure 4.4a.
The entire film surface can NOT be scanned if the wide side of the film , the 36 mm side is inserted first as shown in Figure 4.4b. If the film is inserted as shown in Figure 4.4b, the resulting scan will not cover the entire film surface. Known as clipping , this is shown in Figure 4.5.
[a]Clipped region of film
[b]Scanned region of film
[c]Mounted 35 mm film
[d]Clipping caused by film inserted into the scanner wide side first
Portrait or landscape is the frequent terminology used for the non-square film format. If the image on the film is oriented so that the top of the image corresponds to the wide side of the film , the orientation is called
"landscape" and is illustrated in Figure 4.6a. Conversely, if the image on the film is oriented so that the top of the image corresponds to the narrow side of the film , the orientation is called " portrait" and is illustrated in Figure 4.6b . This is identical to the terminology used in preparing an 8,5 x 11 inch page for text processing or printing .
Fig. 4.6a Image on film is in a landscape orientation
Fig. 4.6b Image on film is in a portrait orientation
Since the scanner requires film to be inserted narrow side first, only portrait slides are actually scanned in a top correct format. Landscape oriented slides will be scanned sideways, producing a 90 degree rotated image. This is corrected by the software after the scan is completed . Since the rotation is 90 degrees, absolutely no image degradation occurs.
Fig. 4.6 The portrait and landscape orientation of film
