User manual PENTAX SMC PENTAX FA 31MM F1.8 LIMITED

[. . . ] smc PENTAX-FA INTERCHANGEABLE LENS OPERATING MANUAL 15 8 2 10 3 4 8 5. 6 A 22 16 11 50 2. 81 . 4 Foreward Thank you for purchasing the smc PENTAX lens. This operating manual applies to all of the smc PENTAX FA and FA J lenses. * In this manual, the "smc PENTAX - FA lens" is referred to as "FA lens" and the "smc PENTAX - FA J lens" as the "FA J lens". * PENTAX and smc PENTAX are trademarks of HOYA CORPORATION. USING YOUR LENS SAFETY 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. [. . . ] * Whenever you turn the zoom ring to change the angle of view (focal distance), the focus may also change slightly. First turn the zoom ring, then focus. About the zoom ring Turning the zoom ring to the right gets a [Telephoto] effect, making the subject look larger. Turning it to the left gets a [Wide angle] effect, covering a wider area. 10 Changing the Lens 1. Align the mount index red dots on the camera body and lens and attach the lens. To detach the lens, hold down the camera's lens unlock button, then turn the lens counterclockwise. * When attaching a lens, do not press the camera's lens unlock button. * After attaching a lens, turn the lens counterclockwise slightly to make sure the lens is locked in place. Finger Point on Limited Lenses Lens Cap 11 You can easily attach a Limited lens by aligning the finger point on the lens with the camera's lens unlock button. Limited lenses FA 31mm f/1. 8AL Limited FA 43mm f/1. 9 Limited FA 77mm f/1. 8 Limited To remove the lens cap, squeeze the tabs as shown in the illustration. * For the FA 43mm f/1. 9 Limited lens, attach the lens cap to the hood. The lens cap cannot be attached directly to the front of the lens. 12 Focusing 15 10 3 86 2 1. 5 ft m 50 A 22 16 11 8 5. 64 2 82 14 To switch between autofocusing and manual focusing, use the camera's focus mode lever. * For non-autofocus cameras, use manual focusing. Autofocusing Press the shutter button halfway to autofocus. Manual focusing Turn the focusing ring as shown in the illustration. 13 Setting autofocus Push the focusing ring forward until you can see AUTO FOCUS. Setting manual focus Pull the focusing ring until AUTO FOCUS is hidden. Turn the focusing ring to focus manually. FA lenses With FA lenses, shift the focusing ring forward or back to switch between autofocus and manual focus. 14 * If your camera has a KAF2 mount, you can still switch between autofocus and manual focus with the lens focusing ring even when the camera has been set to autofocus. * If you have a camera (such as the SF-series) having a KAF mount, set both the camera and lens focus mode switch to the same setting. If the camera is set to autofocus [AF single] and the lens is set to manual focus, you cannot take a picture until the camera's focus indicator lights. * The telephoto lens' focusing ring stops turning at slightly past the infinity symbol. This is because, the point of focus changes depending on the temperature, and sometimes the focus is achieved beyond the infinity symbol. * Even when focusing at infinity, always look through the viewfinder to make sure the subject is in focus. * When the lens is set for manual focus, the focusing ring can continue to turn even past the minimum focusing distance or infinity mark. Setting the Aperture [A (Auto) Lock Switching] 15 15 8 ft 10 3 2 m 22 16 8 15 8 ft 10 3 2 m 22 16 8 50 22 16 11 8 5 . 6 4 50 A 5. 6 4 2. 8 2 1. 4 A 22 16 11 8 To set the aperture ring to A [Auto], hold down the Aperture A-lock button and align the A index with the white-line index. To set the aperture ring to another setting, hold down the Aperture A-lock button and turn the aperture ring. * If your camera has a K mount with no lens information contacts, set the aperture ring to any aperture except A. 16 About the Zoom Lens Aperture Zoom lenses whose maximum aperture varies depending on the focal length have a [Minimum length] aperture index for the shortest focal length and a [Maximum length] aperture index for the longest focal length. To set the aperture to A [Auto], turn the aperture ring to the white [Short focal length index] at the center (regardless of the focal length) as shown in the illustration. [. . . ] *9: Vignetting occurs at the 28-40mm focal lengths. 32 Lens Case Lens Case Compatibility Table Compatible Case Dedicated FA 31mm f/1. 8AL Limited case FA 35mm f/2AL S80-80 FA 43mm f/1. 9Limited Dedicated case FA 50mm f/1. 4 S70-70 FA 77mm f/1. 8Limited Dedicated case Dedicated FA 600mm f/4ED (IF) case FA J 18-35mm f/4-5. 6AL S90-100 FA 20-35mm f/4AL S90-100 FA J 28-80mm f/3. 5-5. 6AL S90-100 FA 28-105mm f/3. 2-4. 5AL S90-100 (IF) FA J 75-300mm f/4. 5-5. 8AL S90-140 Lens The soft cases have a case designation as shown in the Lens Case Compatibility Table on the right. * A dedicated soft case is provided with FA Limited series lenses. MEMO 33 34 Main Specifications *AL: Lens with an aspherical element. IF: Lens with internal focusing. Lens FA 31mm f/1. 8AL Limited FA 35mm f/2AL FA 43mm f/1. 9Limited FA 50mm f/1. 4 FA 77mm f/1. 8Limited FA 600mm f/4ED (IF) FA J 18-35mm f/4-5. 6AL FA 20-35mm f/4AL FA J 28-80mm f/3. 5-5. 6AL FA 28-105mm f/3. 2-4. 5AL (IF) FA J 75-300mm f/4. 5-5. 8AL Construction 9 elements in 7 groups 6 elements in 5 groups 7 elements in 6 groups 7 elements in 6 groups 7 elements in 6 groups 9 elements in 7 groups 12 elements in 10 groups 10 elements in 8 groups 8 elements in 8 groups 12 elements in 11 groups 12 elements in 10 groups Minimum Angle of View Aperture [F] (Diagonal extent) 22 70° 22 63° 22 53° 22 47° 22 31. 5° 32 4. 1° 22-32 100°-63° 22 94°-63° 22-38 75°-30. 5° 22-32 75°-23. 5° 32-38 32°-8. 2° FA J lenses do not have an aperture ring. The aperture is controlled at the A [Auto] position. 35 Includes tripod mount. [. . . ]