User manual SIGMA 30MM F1.4 DC HSM

[. . . ] 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. 1 An image sensor element larger than those corresponding to APS-C cannot be used in digital cameras or 35mm SLR cameras. If such an element is used vignetting will occur on the picture surface. [. . . ] If you wish to focus manually, set the focus mode switch on the lens to the “M” position. Please refer to camera’s instruction manual for details on changing the 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. aF AF AF 2 M AF AF This lens also permits manual focusing even in the autofocus mode. With the camera set to the One-Shot AF (AF-S) mode, it is possible to 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. This is due to possible focus shift resulting from extreme changes in temperature which cause various components in the lens to expand and contract. 4) GEGENLICHTBLENDE LENS HOOD A bayonet type detachable hood is provided with the lens. This lens hood helps to prevent flare and ghosted images caused by bright illumination from outside the picture area. 3) When taking photographs using the built-in flash, it is advisable to remove the lens hood so as to avoid cutting off any of the flash output, which could cause a shadow in the picture. 4 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, 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 good ventilation. [. . . ] Vid objektivbyte, se till att objektivets front hålls nedåt för att undvika att objektivet skadas. J E The glass materials used in the lens do not contain environmentally hazardous lead and arsenic. Använder du polarisationsfilter se till att det är av den ”cirkulära” typen som passar till autofokus. [. . . ]