Pentax A3000 A3000 Manual - Page 41
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INFRARED INDEX MARK If you intend to take infrared photographs using infrared film and R2 or O2 filters, it is necessary to compensate for the difference between visible light focus and infrared focus. As shown on the right, note the subject-to-camera distance on the lens distance scale as you focus through the viewfinder and turn the focusing ring until that distance setting aligns with the red infrared index mark. The figure shows an example in which the subject-to-camera distance is set at infinity (OO). Automatic exposure is not workable in this type of special photography. The exposure must be controlled by the aperture ring, with the mode selector set to "60" (1/60). For details on exposure control, refer to the instructions accompanying the film. I rtm CO t0 wi t ic -1 1 1 1 n1 1-r~ - 28 is - 18 84 48 15 r - • rs. AJ22711 8 5.s 4 Zr 11- a m 10 15 . 1-17 2 1.1 18 8 4 4 8 A422 11 8 5.6 4 2 37.