User manual PENTAX PVT150A

[. . . ] SDM is a trademark of HOYA CORPORATION. USING YOUR LENS SAFELY 1 Although we have carefully designed these lenses for safe operation, please pay special attention to items marked with the following symbols when using this product. WARNING CAUTION This symbol indicates precautions that if not followed, could result in serious injuries to the user. This symbol indicates precautions that if not followed, could result in minor or medium injuries to the user or damage to the equipment. WARNING · Never look at the sun through the lens or camera for a long time. Serious damage to the retina or total loss of eyesight may occur, particularly when looking directly through the lens. CAUTION · Do not leave the lens in direct sunlight without the lens cap. [. . . ] With the , , or / cameras, you can also press the AF button to autofocus. · Do not touch the focusing ring while autofocus is operating as it may cause a malfunction. For more information see the "CAUTION" on page 17. 20 CAUTION · When using the Quick-Shift Focus System, keep pressing the shutter release button (or AF button) after you achieve focus and before taking a picture. If you let go of the shutter release button before taking the picture, autofocus will operate again when you press the shutter release button again. However, by configuring the camera's custom settings, you can take pictures without autofocusing after letting go of the shutter release button. See the camera operating manual for details about the setting procedure. · When focusing with manual focus or the Quick-Shift Focus System, the mechanism allows the focusing ring to rotate freely after it is set to the (infinity) or the minimum focus distance ends. However do not attempt to rotate it any farther than these ends as this will result in decreased performance. - DA 14mm f/2. 8ED [IF] - DA 55mm f/1. 4 SDM - DA 200mm f/2. 8ED [IF] SDM - DA 300mm f/4ED [IF] SDM - DA 16-50mm f/2. 8ED AL [IF] SDM - DA 50-135mm f/2. 8ED [IF] SDM - DA 60-250mm f/4ED [IF] SDM 21 DA 200mm f/2. 8ED [IF] SDM, DA 300mm f/4ED [IF] SDM focusing · The mechanism does not allow the angle of rotation of the focusing ring and the distance scale to align while focusing. This is especially true with manual focus and the Quick-Shift Focus System. 22 Precautions on close-distance scale (For DA 16-45mm f/4ED AL, DA 18-55mm f/3. 5-5. 6 AL WR, DA L 18-55mm f/3. 5-5. 6 AL) In the close-distance scale range (minimum focus distance range), when shooting at the maximum aperture, image quality in the corners of the picture may deteriorate because of the optical characteristics of the lens. When taking a picture in this range, we recommend that you use a smaller aperture, stopping down from full aperture. ZOOM LENS 23 Focusing index Lens hood attaching index Focusing ring Distance scale Zoom ring Focal length scale Zoom index Mounting index 24 The zoom lens has a focusing ring on the front side and a zoom ring on the rear side. Attach the PL filter window cap. Memo: · When shooting, be sure the PL filter window cap is in place to use the lens hood to maximum effect. 31 Built-in lens hood The following lenses have a lens hood built into the lens body. · DA FISH-EYE 10-17mm f/3. 5-4. 5ED [IF] · DA 35mm f/2. 8 Macro Limited (*), DA 15mm f/4ED AL Limited (*) Lenses marked with an * have a built-in sliding hood which should be extended. 32 FILTERS Make sure the filter size matches the lens, then screw the filter onto the front of the lens. Memo: · The compatible filter size for each lens is listed on pages 47-53. · Filters cannot be mounted on the DA FISH-EYE 10-17mm f/3. 5-4. 5ED [IF]. Precaution on filters · Since a filter becomes a part of the optical system when attached to the lens, handle it in the same way you handle the lens with care to dust, dirt and scratches. Normally, attaching two or more filters on a lens does more harm than good. However, attaching a circular polarizing filter and another filter is not a problem. · Use a circular polarizing filter with an autofocus camera for proper exposure and autofocusing. Attaching the 30. 5mm filter to the DA 40mm f/2. 8 Limited lens Normally, you attach the 49mm filter to the front of the lens. But you can also screw a 30. 5mm filter to the back of the dedicated hood. 33 Attaching a filter and the dedicated lens hood to the DA 21mm f/3. 2 AL Limited lens It is possible to attach a 49mm diameter filter to the front of the DA 21mm f/3. 2 AL Limited lens, but not when the dedicated lens hood is attached. To use a filter with the dedicated lens hood, screw a 43mm diameter filter to the back of the filter. 34 Attaching a filter and the dedicated lens hood to the DA 70mm f/2. 4 Limited lens With the DA 70mm f/2. 4 Limited lens, attach the 49mm diameter filter to the front of the lens. To use it together with the dedicated lens hood, screw it on over the filter that is attached. Memo: · The lens hood cannot be mounted on some circular polarizing filters that are not produced by PENTAX. 35 Circular polarizing filters and vignetting Circular polarizing filters are thicker than regular filters. [. . . ] 76. 5-207mm in 35mm format) 35mm format) Elements in groups 11-8 18-14 Angle of view 76°­29° 31. 5°­11. 9° Aperture f/3. 5­f/5. 6 f/2. 8 Minimum aperture f/22­f/38 f/22 Mount type KAF-mount KAF2-mount Minimum focus 0. 25m (0. 82ft) 1. 0m (3. 3ft) distance Maximum Approx. diameter × length Weight Soft case PH-RBC 52mm 68. 5mm × 67. 5mm (2. 7in × 2. 7in) Approx. 260g/ 9. 2oz) S80-120 PH-RBK 67mm Lens DA L 50-200mm f/4-5. 6ED 50-200mm (equivalent to approx. 76. 5-307mm in 35mm format) 11-10 31. 5°-8. 1° f/4-5. 6 f/22-32 KAF-mount 1. 1m (3. 6ft) Approx. [. . . ]