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❚❚ AI-, AI-Modified NIKKOR or Nikon Series E Lenses
An AI Nikkor 50mm f/1.4S lens is shown.
AI-, AI-modified NIKKOR, and Nikon Series E lenses have an exposure
meter coupling guide on the aperture ring; they do not have CPU
contacts and their labels do not begin with “AF”.
Exposure meter
coupling guide
D CPU Versus Non-CPU Lenses
CPU lenses have CPU contacts.
CPU contacts
CPU lens Non-CPU lens
When using a non-CPU lens, enter the focal length and maximum aperture
using the Non-CPU lens data option in the camera setup menu.
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