Nikon 4799 F6 Instruction Manual - Page 144
Non-CPU Lens
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UPC - 018208017997
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Non-CPU Lens By specifying lens data (lens focal length and maximum aperture), you can gain access to a variety of CPU lens functions when using a non-CPU lens. Available functions • If the focal length of the lens is known: Automatic power zoom can be used with attached Speedlight • When the maximum aperture of the lens is known: The aperture value is displayed in the top LCD panel and viewfinder . Auto Aperture flash can be used with attached Speedlights (x 155). • Specifying both the focal length and maximum aperture of the lens: Enables Color Matrix Metering (x 62). Functions for improved accuracy • Specifying both the focal length and maximum aperture of the lens improves accuracy in: Center-Weighted and Spot Metering (x 63), i-TTL Balanced Fill-Flash* (x 150), Multi-Sensor Balanced Fill-Flash* (x 154). * Set the metering system other than Spot. Available focal length and aperture • Focal lengths: 6, 8, 13, 15, 16, 18, 20, 24, 25, 28, 35, 43, 45, 50, 55, 58, 70, 80, 85, 86, 100, 105, 135, 180, 200, 300, 360, 400, 500, 600, 800, 1000, 1200, 1400, 1600, 2000, 2400, 2800, 3200, and 4000mm • Apertures: f/1.2, 1.4, 1.8, 2, 2.5, 2.8, 3.3, 3.5, 4, 4.5, 5, 5.6, 6.3, 7.1, 8, 9.5, 11, 13,15, 16, 19, 22 Available non-CPU lens • Non-CPU lens data can be specified with AI Nikkor lenses. Non-AI lens does not function accurately even when the lens data are specified. To use non-AI lens, select a lens number in which no focus length and maximum aperture are specified. Available focal lengths and apertures • If the corresponding focal length is not listed, choose the closest value greater than the actual focal length of the lens. If you are using a Speedlight in this condition, adjust the zoom head position manually. Zooming with zoom lenses • Lens data are not adjusted when non-CPU lenses are zoomed in or out. After changing the zoom position, select new values for the lens focal length and maximum aperture. 144
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