Pentax P30T P30T Manual - Page 38

DEPTH-OF-FIELD PREVIEW p.7.164.• 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 5Omm Lens D.51446 44414 046m 0.5m 0.6m 0.8m 10m 1.6m 2.0.6 3.00, 10.0m 1/1.4 0.448 0.467 0.503 0.596 - 0.606 0.791 0.810 0155 - 1.016 1.4414 - 1538 1.936 - 2.070 2563 3.164 9.488 - 12.571 56.370 512 0.444 - 0.464 0.496 - 0.606 0593 0.607 0.707 0514 0978 - 1.023 I 449 - 1.666 1.908 - 2.101 2.794 - 3239 7.973 - 13.421 31772 5/25 0.446 0.464 - 0.507 0.660 - 0.610 0.701 - 0.820 0970 - 1.032 1.430 - 1.578 1/74 - 2.144 2.719 - 3.345 7.375 *. 15,562 27.707 IN 0.443 - 0.467 0.491 - 0609 0.686 - 0 615 5774 - 5826 0968 I 402 1.613 1125 2.213 2.615 3521 8531 - 20.422 19.4136 • 36 1/18 0.440 - 0.440 0.617 - 0513 0581 - 0.621 0.764 0540 0.942 1.061 1.38$ 1.684 1.764 2.312 2.447 3.781 1145 - 35.501 53570 1/1 0.436 - 0486 0.452 .., 0.519 0.573 0.749 - 0589 0110 1.316 1.748 I ATO - 2.478 2.318 - 4.285 4955 9.720 1/11 0.431 - 0471 0.476 - 0.527 0.584 - 0.642 0.732 - 0583 0102 1.140 5159 - 1181 1664 2.724 2.137 5.073 4.191 7.085 1/19 0.423 - 0.491 0.418 0.54$ - 0.863 0.706 - 0.977 0.951 - 1.218 1.574 - 2.003 5.444 - 3285 - 17..482/26 3.313 ••• 4181 unit=meter 1/22 0 414 - 0493 0.454 - 0.557 0532 0.891 0175 - 0.987 0.806 1.322 1.096 1.314 - 4295 1.885 -16103 75138 3.616