Kodak Pro 14n User Guide - Page 152
D-TTL Flash Control, 3D Multi-Sensor Balanced Fill-Flash for Digital SLR
UPC - 041771334376
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Flash Photography D-TTL Flash Control The type of D-TTL flash control varies with the type of lens in use: Lens Flash control for built-in Speedlight Type G or 3D Multi-Sensor Balanced Fill-Flash for Digital SLR: D CPU lens Based on information from the matrix metering system, flash output is adjusted to provide balance between the main subject and ambient background lighting. The Speedlight emits a series of nearly invisible pre-flashes (monitor pre-flashes) immediately before the main flash. Pre-flashes reflected from objects in all areas of the frame are picked up by the camera's through-the-lens (TTL) multi-sensor and analyzed in combination with data on the current sensitivity (ISO equivalency) setting, aperture, lens focal length, exposure compensation, and distance information provided by the lens. The results of this analysis are used to balance flash output with natural light. 3D multi-sensor balanced fill-flash for digital SLR is not available in Manual Exposure mode or when Spot metering is used. Other CPU lens Multi-Sensor Balanced Fill-Flash for Digital SLR: As above, except that distance information is not included in regulating flash output. Not available in Manual Exposure mode or when Spot Metering is used. All types Standard TTL Flash for Digital SLR: Flash output is adjusted to ensure that the main subject is correctly exposed, without taking the background into account. It is recommended for shots in which the main subject is emphasized at the expense of background details, or when exposure compensation is used. Standard TTL flash for digital SLR is activated automatically when: • Built-in Speedlight: the function dial is set to M (Manual Exposure mode) or Spot metering is selected • Optional Speedlight: Spot metering is selected 10-2 April 29, 2004