User manual SIGMA APO 500MM F2.8 EX DG HSM

[. . . ] AF will not function if the camera body does not support this type of motor. 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. [. . . ] This is due to possible focus shift resulting from extreme changes in temperature which cause various components in the lens to expand and contract. ABOUT TELE CONVERTERS 360 ( 6) The lens can be used with Sigma’s 1. 3 telephoto lens or a 1000mm F9 telephoto lens respectively (both can be used in manual focus only). Do not use other manufacturers’ teleconverter’s, only those listed above are compatible. It is possible to use auto focus in Live View if the camera is in “contrast detect” AF mode. To attach a filter to the lens assembly, please use the filter holder that is inserted into the lens barrel near the rear of the lens assembly. FILTER HOLDER 46mm A normal (clear) filter is already supplied with your Lens Filter Holder. To remove the filter from the lens, first press together the filter holder clip. In order to remove the filter, you must hold Ring A in place and then unscrew the filter turning in a counterclockwise direction (fig. To install another filter, you must hold Ring A so that it cannot move and then place your filter in the holder by turning it in a clockwise direction. To re-install the filter holder into the lens barrel, the notation (ø46) must be on the left side of the holder while the lens faces away from you (fig. A Polarizing (PL) filter is supplied with your lens as one of its accessories. The function of this filter is the reduction of undesired reflections that are produced by glass or water surfaces. In addition, it increases the contrast of landscape pictures and darkens blue skies. Please turn your filter rotator ring while looking through the viewfinder to set the desired picture taking position (fig. This lens has been designed to deliver optimum performance with a filter installed in the lens assembly. The quality of the picture decreases if the filter is not installed inside the lens. Stray light and dust entering from the insertion slot of the filter holder can affect exposure and cause poor pictures if the filter holder is not in the lens assembly. [. . . ] For extended storage, choose a cool and dry place, preferably with good ventilation. To avoid damage to the lens coating, keep away from mothballs or naphthalene gas. Do not use thinner, benzine or other organic cleaning agents to remove dirt or finger prints from the lens elements. When using the lens in the rain or near water, prevent it from getting wet. [. . . ]