User manual SONY SAL1635Z annexe 2

[. . . ] A special apodization element gives defocused areas a smooth and attractive appearance. This lens is equipped with the aperture ring that enables a stepless aperture setting between F No. 2. 8-5. 7 (T No. 4. 5-6. 7*), and makes the most of the defocusing effect in the foreground and background areas. Enjoy this unique image-expression, which cannot be duplicated on traditional lenses. * T No. is a practical value that indicates how much light is in the lens, allowing for the lens's transmission rate. [. . . ] Although this lens's wide-open aperture is f/2. 8, the special apodization system provides the light amount of T/4. 5, which is the same as that of f/4. 5 on a normal lens. The aperture value on the lens, the value indicated on a camera, and the value used when determining the exposure are all indicated by T No. as a normal aperture value. 5 98 76 Attaching/detaching the lens To attach the lens 1 Remove the rear and front lens caps and the camera body cap. · You can attach/detach the front lens cap in two ways, (1) and (2). When you attach/detach the lens cap with the lens hood attached, use method (2). This lens is designed for Sony cameras. (1) (2) WARNING To reduce fire or shock hazard, do not expose the unit to rain or moisture. Do not directly look at the sun through this lens. Doing so might harm your eyes or cause loss of eyesight. Keep the lens out of reach of small children. Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems) This symbol on the product or on its packaging indicates that this product shall not be treated as household waste. Instead it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product. (In P mode or sceneselection setting, the settings will be the same as A mode. In S mode, the settings will be the same as M mode. ) · A slight click can be felt at the T/4. 5, T/5. 6, and T/6. 7 marks. · The index marks between T/4. 5 and T/5. 6 represent 1/3 aperture values. · Stop-down metering is used when the stepless aperture is selected. · When shooting, the aperture values set by the aperture ring are used. Those values are not accurately reflected in the values displayed or recorded by the camera. A position Exposure correction Magnification ratios Distance 0. 25X 0. 87 +1 0. 20X 1. 0 + 3/4 0. 15X 1. 2 m + 1/2 0. 08X 2. 0 + 1/4 0. 029X 5. 0 0 About Apodization A special "apodization element" is situated near the aperture of the lens optical system. This special optical element is a type of ND filter which gradually becomes thicker (darker) towards the perimeter, thereby reducing the amount of light that passes through around the outer perimeter. The aperture of this lens is indicated and controlled by the T No. , which compensates for the reduction imposed by the special apodization element. on a normal lens when the exposure is determined. To use the A position This setting (A position) allows the lens to be used the same way as traditional manual-focus lenses. Set the aperture on your camera. · All exposure modes (P, A, S, M) can be used on the camera. Aperture Information This lens has two apertures; the stepless aperture, manually controlled with the aperture ring, and the automatic aperture (A position), controlled by the camera. [. . . ] Set the aperture on your camera. · All exposure modes (P, A, S, M) can be used on the camera. Aperture Information This lens has two apertures; the stepless aperture, manually controlled with the aperture ring, and the automatic aperture (A position), controlled by the camera. In the stepless aperture setting, emphasis is put on the aperture shape, which is rounder than the automatic aperture. For large aperture settings, selecting the stepless aperture is recommended. Stepless aperture Principle of defocusing effect improvement Defocusing of a dot Apodization element Defocusing of a line This lens Intensity decreases gradually toward the perimeter Gradually diffused without losing shape Automatic aperture (functioning when set to the A position) Theoretical ideal traditional lens Depth of field (in meters) When focus is set on a subject, anything at that same distance will appear sharp, and anything within a certain range before and beyond the subject will also appear in focus; this is called depth of field. Depth of field depends on the subject distance and aperture you choose. 10m 5m 3m 2m 1. 5m 1. 2m 1. 0m 0. 87m T/4. 5 114. 8 10. 91 9. 23 5. 21 4. 81 3. 068 2. 935 2. 027 1. 974 1. 514 1. 478 1. 028 1. 192 1. 005 0. 995 0. 873 0. 867 T/5. 6 97. 8 11. 08 9. 11 5. 24 4. 78 3. 080 2. 924 2. 032 1. 969 1. 156 1. 484 1. 209 1. 191 1. 006 0. 994 0. 874 0. 866 T/6. 7 82. 3 11. 32 8. 96 5. 29 4. 74 3. 096 2. 910 2. 038 1. 963 1. 519 1. 481 1. 211 1. 189 1. 007 0. 993 0. 874 0. 866 T/8 69. 2 11. 61 8. 79 5. 35 4. 69 3. 115 2. 894 2. 046 1. 956 1. 523 1. 478 1. 213 1. 187 1. 008 0. 992 0. 875 0. 865 T/11 49. 0 12. 44 8. 37 5. 51 4. 58 3. 165 2. 852 2. 065 1. 939 1. 533 1. 469 1. 219 1. 182 1. 011 0. 989 0. 877 0. 863 T/16 34. 7 13. 84 7. 84 5. 76 4. 42 3. 239 2. 795 2. 094 1. 915 1. 547 1. 456 1. 226 1. 175 1. 016 0. 985 0. 881 0. 860 T/22 24. 6 16. 48 7. 20 6. 15 4. 22 3. 350 2. 719 2. 135 1. 882 1. 567 1. 439 1. 238 1. 165 1. 023 0. 978 0. 885 0. 856 T/32 17. 4 22. 58 6. 46 6. 80 3. 97 3. 522 2. 618 2. 198 1. 837 1. 597 1. 415 1. 254 1. 151 1. 033 0. 970 0. 891 0. 850 Intensity stays the same Line becomes thicker Defocused images appear as blurred clusters of dots. 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