121Taking Photographs—Non-CPU LensesBy specifying lens data (lens focal length and maximum aperture), the usercan gain access to a variety of CPU lens functions when using a non-CPUlens. If the focal length of the lens is known:• Automatic power zoom can be used with attached Speedlights• Lens focal length is listed (with an asterisk) in the playback photo info dis-playWhen the maximum aperture of the lens is known:• The aperture value is displayed in the top control panel and viewfinder• 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,including Reflex-Nikkor lenses)• Improves the precision of center-weighted and spot metering, i-TTL Bal-anced Fill-Flash for Digital SLR, and Multi-Sensor Balanced Fill-Flash forDigital SLRSpecifying Lens Focal LengthLens focal length can be specified using the Non-CPU lens data option inthe shooting menu or by pressing the FUNC. button and rotating the maincommand 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 ( 158) and press the multi selector tothe right.Non-CPU Lenses Specifying Lens DataFocal Length Not ListedIf the correct focal length is not listed, choose the closest value greater than the actualfocal length of the lens.
