User manual SIGMA 579

[. . . ] 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 Focus Index Line Zoom Ring Focus Mode Switch (Sigma SA and Canon AF only) Mount Tripod Socket Lens Hood NIKON AF TYPE CAMERAS This lens functions in the same way as a G Type auto-focus Nikon lens (without an aperture ring). For more details, please refer to the camera's instruction manual. ATTACHING TO CAMERA BODY When this lens is attached to the camera body it will automatically function in the same way as the camera manufacturer's lens. On the lens mount surface, there are a number of couplers and electrical contacts. [. . . ] 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. This is due to possible focus shift resulting from extreme changes in temperature which cause various components in the lens to expand and contract. Zooming Rotate the Rubber grip on the zoom ring to the desired position. TRIPOD SOCKET AND COLLAR This lens has a detachable tripod socket. When the locking knob on the collar is loosened, the lens and camera can rotate freely to easily position the camera horizontally or vertically (fig. To remove the tripod collar from the lens, first loosen and then disengage the locking knob. 4) FLASH PHOTOGRAPHY The camera's built-in flash will cause barrel shadow if used with this lens. For best results, please only use an external flash unit. DEPTH OF FIELD SCALE The depth of field scale helps you to check the depth of field (the zone of sharpness) of your composition. For example in figure (5), the depth of field zone is shown when the aperture F16 is used. The depth of field scale can be used at a focal length of 70mm only. ABOUT TELE CONVERTERS The lens can be used with Sigma's 1. 4x EX or 2. 0x EX Apo Tele Converters (optional), becoming a 98-280mmF4 Autofocus telephoto zoom lens or a 140-400mm F5. 6 Autofocus telephoto zoom lens respectively. Do not use other manufacturers' teleconverter's, only those listed above are compatible. We recommend the DG APO Tele-Converters when using with DSLR cameras. LENS HOOD A bayonet type detachable `hood is provided with the lens. This lens hood helps to prevent flare and ghosted images caused by extraneous light. (fig. 6) 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. Two or more filters and/or special, thicker filters, such as a polarizing filter, may cause vignetting. [. . . ] Sudden temperature changes may cause condensation or fog to appear on the surface of the lens. 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 15 ­ 18 34. 3 ­ 12. 3° 22 1m (3. 28 ft) 1:3. 5 77mm 86. 6×184. 4mm (3. 41×7. 26 in) 1345g (47. 4 oz) Dimensions and weight include the SIGMA mount. The CE Mark is a Directive conformity mark of the European Community (EC). SIGMA (Deutschland) GmbH Carl-Zeiss-Str. 10/2, D-63322 Rödermark, F. R. GERMANY Verkauf: 01805-90 90 85-0 Service: 01805-90 90 85-85 Fax: 01805-90 90 85-35 [. . . ]