Pentax SF-1 SF-1 Manual - Page 60
Interchangeable, Focusing, Screens
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INTERCHANGEABLE FOCUSING SCREENS 0 0 0 0 00000 o oo \1 OO In addition to the standard all-surface-matte focusing screen, two other optional screens are available. The screens can easily be changed by using a pair of tweezers included in the focusing screen's case. C ) Scale Matte Screen (F D-41) : for photomicrography and macrophotography. Cross-Lined Matte Screen (FG-40): for copying work and general-purpose photography. 1. As illustrated, the focusing screen hangs down when the pressure plate (behind the "0" mark) is pulled down (toward an arrow "-.."). 2. Take the screen out by grasping its projected part with the tweezers and stand it up at the groove of the case to avoid damages or scratches. 3. As illustrated, place the new screen on the frame with the tweezers and push the frame up until it locks with a click. The focusing screens are made of plastic. Be careful not to damage them when handling. To clean a screen, use a blower to blow away the dust. • 56