User manual SIGMA 571

[. . . ] In order to get the maximum performance and enjoyment out of your Sigma lens, please read this instruction booklet thoroughly before you start to use the lens. DESCRIPTION OF THE PARTS (fig. 1) Filter Attachment Thread Focus Ring Distance Scale Depth of Field Read Out Index Focus Index Line Focus Mode Switch Zoom Ring Mount Lens Hood manually override the autofocus while the shutter release button is pressed halfway. When operating this lens in manual focus mode, it is recommended that correct focus be confirmed visually in the viewfinder rather than relying on the distance scale. [. . . ] For more details, please refer to instruction manual of the camera in use etc. ATTACHING TO CAMERA BODY When this lens is attached to the camera body it will automatically function in the same way as your normal lens. Please refer to the instruction booklet for your camera body. On the lens mount surface, there are a number of couplers and remove the lens hood so as to avoid cutting off any of the flash output, which could cause a shadow in the picture. In order to place the lens and hood into the storage case, you must first remove the hood, then replace it on the lens in the reverse position. To avoid damaging the lens, be especially sure to place the lens with its front end down while changing the lens. Many accessories such as rear mounted teleconverters, extension tubes, etc. , are specially made for designated lenses. Before you purchase such accessories, please check your Sigma lens to determine that it is compatible and that the accessories will function properly with it. FILTER Only one filter should be used at the time. Two or more filters and/or special thicker filters, like a polarizing filter, may cause vignetting. When using a polarizing filter with AF camera, use the "circular" type. BASIC CARE AND STORAGE Avoid any shocks or exposure to extreme high or low temperatures or to humidity. For extended storage, choose a cool and dry place, preferably with SETTING THE EXPOSURE MODE The sigma lens functions automatically after mounting to your camera. Please, refer to the camera instruction book. FOCUSING AND ZOOMING This lens features Sigma's built-in Hyper Sonic Motor (HSM). SIGMA AF and CANON AF For autofocus operation, set the focus mode switch on the lens to the "AF" position (fig. 2). If you wish to focus manually, set the focus mode switch on the lens to the "M" position. NIKON AF , PENTAX AF and SONY For autofocus operation, set the camera to AF mode and set the focus mode switch on the lens to the "AF" position (fig. 2). If you wish to focus manually, set the focus mode switch on the lens to the "M" position. [. . . ] When entering a warm room from the cold outdoors, it is advisable to keep the lens in the case until the temperature of the lens approaches room temperature. TECHNICAL SPECIFICATIONS Lens construction Angle of View Minimum Aperture Minimum Focusing Distance Magnification Filter Size Dimensions Dia. ×Length Weight 12 ­ 14 84. 1 ~ 34. 3° 22 38cm (1. 25 ft) 1:5. 3 82mm 88. 6×94. 7mm (3. 49×3. 73 in) 790g (27. 9 oz) Dimensions and weight include the SIGMA mount. camera's focusing mode. For Nikon, Pentax and Sony mounts, it is only possible to use AF with camera bodies which support motors driven by ultrasonic waves such as HSM. AF will not function if the camera body does not support this type of motor. [. . . ]