Pentax 26755 Operation Manual - Page 20
Using the Infrared Index
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18 Using the Infrared Index 22 16 8 15 8 ft 10 3 2 m 50 A 22 16 11 8 5.6 4 2.8 2 1.4 15 8 ft 10 3 2 1 m 22 16 8 50 A 22 16 11 8 5.6 4 2.8 2 1.4 If you use infrared film with an R2 or O2 filter, the point of focus differs from normal shooting (with visible light). This means the point of focus must be corrected. * Infrared film cannot be used with the MZ-S, MZ-60, and cam- eras since these cameras use infrared light to detect film transport operations. When the subject is in focus in the viewfinder, note the point of focus on the distance scale (shown in the left illustration). Then turn the focusing ring so the respective point of focus on the distance scale is aligned with the infrared index mark, as shown in the right illustration. * Before turning the focusing ring, set the focus mode to manual focus. * To determine the proper exposure, refer to the film's instruction manual.