93Reference—Non-CPU LensesNon-CPU LensesBy specifying lens data (lens focal length and maximum aperture), the user cangain access to a variety of CPU lens functions when using a non-CPU lens. If thefocal length of the lens is known:• Automatic power zoom can be used with optional SB-800 and SB-600 Speed-lights• Lens focal length is listed (with an asterisk) in the playback photo info displayWhen the maximum aperture of the lens is known:• The aperture value is displayed in the control panel and viewfi nder• Flash level is adjusted for changes in aperture• Aperture is listed (with an asterisk) in the playback photo info displaySpecifying both the focal length and maximum aperture of the lens:• Enables color matrix metering (note that it may be necessary to use center-weighted or spot metering to achieve accurate results with some lenses, in-cluding Reflex-Nikkor lenses)• Improves the precision of center-weighted and spot metering and i-TTL Bal-anced Fill-Flash for Digital SLRSpecifying Lens Focal LengthLens focal length can be specified using the Non-CPU Lens Data option in theshooting menu or by pressing the FUNC. button and rotating the main com-mand dial. The following settings are available:• 6–45 mm: 6, 8, 13, 15, 16, 18, 20, 24, 25, 28, 35, 43, and 45 mm• 50–180 mm: 50, 55, 58, 70, 80, 85, 86, 100, 105, 135, and 180 mm• 200–4000 mm: 200, 300, 360, 400, 500, 600, 800, 1000, 1200, 1400, 1600, 2000,2400, 2800, 3200, and 4000 mmThe Non-CPU Lens Data Menu1 Highlight Non-CPU Lens Data in the shootingmenu ( 124) and press the multi selector tothe right.The FUNC. ButtonLower the built-in fl ash and turn any optional Speedlights off before using the FUNC. but-ton to specify lens data.
