AI-P lens
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Manual AI-S Nikkor lenses with a CPU that sends the lens information to the camera body for metering, allowing all AF bodies with CPU contacts in the mount to use these lenses in Program mode. The latest is the ultra compact Nikkor 45mm f/2.8 P "pancake", made to celebrate the FM3A and proving Nikon's loyalty to film and manual body users. Some services can add the chip to AI-S lenses to convert them into AI-P.
