Nikon D70-series User Manual
Also see for D200: SpecificationsBrochureBrochure & specsBrochure & specsSetup guide
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58Reference—FocusThe AF-Assist IlluminatorThe built-in AF assist illuminator enables the camerato focus even when the subject is poorly lit. The cam-era must be in focus mode S (single-servo autofocus),an AF-Nikkor lens must be attached, and the centerfocus area or focus area group must be selected orclosest subject priority in effect. If these conditions are met and the subject ispoorly lit, the illuminator will light automatically to assist the autofocus operationwhen the shutter-release button is pressed halfway.For the AF-assist illuminator to function correctly, the lens must have a focallength of 24–200 mm and the subject must be in range of the illuminator. Lenshoods should be removed. With most lenses, the illuminator has a range of about0.5–3 m (1 ft. 8 in.–9 ft. 10 in.). With the following lenses, autofocus with AF-assistillumination is not available at ranges under 0.7 m (2 ft. 4 in.):• AF Micro ED 200 mm f/4D• AF-S ED 28–70 mm f/2.8D• AF-S VR ED 24–120 mm f/3.5–5.6G• AF Micro ED 70–180 mm f/4.5–5.6DWith the following lens, AF assist is not available at ranges under 1 m (3 ft. 3 in.):• AF-S DX ED 55–200 mm f/4–5.6GWith the following lens, AF assist is not available at ranges under 2.5 m (8 ft. 2 in.):• AF VR ED 80–400 mm f/4.5–5.6DAF assist is not available with the AF-S VR ED 200–400 mm f/4G.Continuous Use of the AF-Assist IlluminatorAfter the AF-assist illuminator has been used for several consecutive shots, it may turn offbriefl y to protect the lamp. The illuminator can be used again after a short pause. Note thatthe illuminator may become hot with continuous use.a9—AF Assist ( 152)This option can be used to turn AF-assist illumination off.With the following lenses, AF assist is not available at ranges under 1.5 m (4 ft. 11 in.):• AF-S VR ED 70–200 mm f/2.8G• AF ED 80–200 mm f/2.8D• AF-S ED 80–200 mm f/2.8D |
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