Nikon F55 Instruction Manual - Page 26
AF-Assist Illuminator - 35mm
UPC - 074101484663
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AF-Assist Illuminator When the subject is dark and the shutter release button is pressed lightly, the camera's AF-Assist Illuminator automatically turns on and enables autofocus operation in a dark environment. Approx. 0.5-3m • AF-Assist Illuminator automatically turns on in the following situations: Focus mode is autofocus, AF Nikkor lens (except AF-S and AF-I) is used, subject is dark and centre focus area is selected or Dynamic AF Mode with Closest-Subject Priority is activated. • AF-Assist Illuminator does not turn on in d or g. • Focal length of the usable AF Nikkor lens is 24- 200mm. • The distance range of the AF-Assist Illuminator is approx. 0.5-3m. Autofocus using the camera's AFAssist Illuminator cannot be performed due to vignetting with some lenses at a shooting distance less than 1m (page 51). • Even when the optional Speedlight with AF-Assist Illuminator is attached, the camera's Illuminator turns on (page 94). NOTE: Lenses incompatible with AF-Assist Illuminator • Lenses with autofocus using the camera's AF-Assist Illuminator cannot be performed due to vignetting at a shooting distance less than 1m. AF Micro 200mm f/4 IF-ED AF 18-35mm f/3.5-4.5 ED AF 20-35mm f/2.8 IF AF 24-85mm f/2.8-4 IF AF 24-120mm f/3.5-5.6 IF AF Micro 70-180mm f/4.5-5.6 ED • Lenses with autofocus using the camera's AF-Assist Illuminator cannot be performed due to vignetting regardless of shooting distance. AF 80-200mm f/2.8 ED AF VR 80-400mm f/4.5-5.6 ED • Autofocus cannot be used with AF-S and AF-I lenses (AF-Assist Illuminator also does not turn on). FOCUS OPERATION NOTE: Continuous use of the AF-Assist Illuminator When the AF-Assist Illuminator is used continuously, illumination is limited temporarily to protect the firing tube. The illumination restarts after a few moments. Also, when the AF-Assist Illuminator is used repeatedly in a short period of time, be careful not to touch the AF-Assist Illuminator lamp because it may become hot. 50 51