Pentax Spotmatic Spotmatic Manual - Page 22

55mm f/1.8 • • .4 • :In • Infra-red photography 50mm f/1.4 If you intend to take infra -red photographs, remember to use the small "R" index marked on the depth-of-field guide. Some of the Takumar lenses, however, like the above picture of Super-Takumar 50mm f/1.4, do not have the "R" mark. The index is just a short orange line. First, focus your lens on your subject. Determine the lens to subject distance from the distance scale. Then match your lens to subject distance to the "R" mark by turning the distance scale accordingly. For instance, if your subject is in focus at infinity, turn the distance ring and move the infinity (co) mark to the "R" index. The "R" index marking on the Takumar lenses is based on the lens setting at infinity. How to make deliberate double exposure 0 For deliberate double exposures, make the first exposure in the normal way. Then tighten the film by turning the rewind knob ®, and keep hold of the rewind knob. Depress the film rewind release button C) and cock the rapid wind lever. This tensions the shutter without advancing the film. Finally, release the shutter to make the second exposure. Then make one blank exposure, before taking the next picture, to avoid overlapping. 20