Pentax P3n P3n Manual - Page 38

DEPTH-OF FIELD PREVIEW • 4, Your camera enables you to preview just what will and what will not be sharp in your pictures. By depressing the preview lever near the lens mount, you can close the lens down to whatever aperture you have set. You can then preview how much sharpness you will get in your picture by examining the picture area on the ground glass. After previewing your picture, if you release the preview lever, the lens will return to full aperture for focusing. You cannot, however, preview the depth of field with your camera set in the Programmed AE mode. Note: Taking pictures with the preview lever depressed will result in incorrectly exposed pictures. Depth-of-field Table: SMC Pentax-A 50mm Lens 0 45m 0 aEan Ohm 1 Om Ism 20m 30m 1013m 1,1.4 - 0 453 0 497 - 0 503 0 595 - 0 605 089t - 0810 0 985 - 1 016 1 464 - 1 538 I 935 - 2070 2853 - 3 164 8 488 12 171 55.370 1/2 0 446 - 0.454 0 495 - 0 505 0 593 - 0607 0.787 - 0.814 0978 I 023 1 449 1555 1908 - 2.101 2.794 - 3.239 7 973 - 13.421 - 38772 1/22 0445 0 455 0494 - 0507 0.590 0510 0.781 0.820 0970 - 1032 1.430 1.578 1.874 2.144 2.719 3.346 7.375 - 15.552 27.707 IN 0 443 0 457 0 491 - 0 509 0.586 0215 0.774 - 0228 0958 1046 1402 - 1 613 1225 7 2.213 2615 - 3.521 6.631 - 20.422 19 408 • 26 1/5.6 0 440 - 0 460 04137 - 0513 0.581 - 01321 0.764 - 0.840 0.942 1.386 1.861 1.764 - 2.312 2.467 - 3.785 5.845 - 35.101 Y 13.876 1/11 0436 0.482 - 0.519 0.573 -0130 0749 - 0.259 0119 1116 - 1.744 14179 - 2.479 2318 - 4.246 421515 - 9.726 at I 0.431 -0.471 0.476 - 0577 0.564 -0.642 0.732 - 0.883 0892 - 1.140 1.259 - 1161 1.584 - 2.724 2.137 - 5.073 4.181 - 7.085 f/111 0.423 -0.481 0.466 - 0.540 0 549 -0663 0 705 - 0927 0.851 - 1.218 1.174 1.449 - 712.2962 3.313 4185 unit -meter 1/22 0414 - 0493 0.454 - 0557 0 532 -0.691 0675 -.. 09/37 0.806 - 1 328 1.086 - 2462 1.314 1265 -16.883 2655 1 565