PDAF may refer to:
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Probabilistic data association filter, a statistical approach to the problem of plot association in a radar tracker
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Priority Development Assistance Fund
The Priority Development Assistance Fund (PDAF) was a discretionary fund in the Philippines available to members of Congress. Originally established as the Countrywide Development Fund (CDF) in 1990, it was designed to allow legislators to fund sm ...
, a discretionary fund in the Philippines
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Phase-detection autofocus
An autofocus (or AF) optical system uses a sensor, a control system and a motor to focus on an automatically or manually selected point or area. An electronic rangefinder has a display instead of the motor; the adjustment of the optical syste ...
, a type of autofocus used In some cameras
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