Nikon 1799 instruction manual Using a non-AI lens, AI lens and non-AI lens, Non-AI lens

•Using a non-AI lens

To attach a Nikon lens that does not have an AI coupling mechanism (lenses made before 1977), the F6‘s meter coupling lever must first be modified. Contact an authorized Nikon dealer or service center for modification. After modification, follow the instructions for attaching a non-AI lens.

AI lens and non-AI lens

Meter coupling	Meter coupling
shoe	ridge

AI lens
Meter coupling	No meter
shoe	coupling ridge

•AI lenses have a meter coupling ridge and holes on the meter coupling shoe (AF Nikkor lens [except for F3AF], Series-E and Nikkor 50mm f/1.8 do not have a meter coupling shoe).

Detailed Operation

Non-AI lens

Attaching non-AI lens after modifying the meter coupling lever

Meter coupling lever 1 Push the meter coupling lever up.

2 Position lens in the camera’s bayonet mount so that the mounting indexes on the lens and camera body are aligned. Twist lens counterclockwise until it locks into place.

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