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Forums Lobby MASTER YOUR NIKON CAMERA Nikon D5000/D3000 series (Public) topic #613
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Subject: "RE: Using AI lenses on D5000" Previous topic | Next topic
gkaiseril Gold Member  Chicago, US  Nikonian since 28th Oct 2005 Sun 20-Sep-09 02:45 PM
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#1. "RE: Using AI lenses on D5000"
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Sun 20-Sep-09 05:28 PM by gkaiseril

The AI lens was introduced in 1977. The Nikon "AI" lens is a lens that allows for the automatic setting of the maximum f Stop for Nikon camera. Earlier Non-AI lenses required the turning of the aperture ring for setting the aperture for exposure by centering the exposure needle within the brackets. AI lenses added a metering ring that the camera would allow the camera to set the f stop for the correct exposure. For both lenses the iris release lever allowed the lens's iris to close for the exposure. A Non-AI Nikkor lens.

The exposure meter will not adjust the lens's aperture for the correct exposure since there are no electronics within the lens to send lens information to the camera and to receive the signals from the metering circuitry and set the lens's aperture. You can use the 'sunny 16' rule to estimate the exposure and then chimp the shot and look at the histogram to fine tune the next exposure.

Once you stop the lens to f 5.6 or smaller, there is not enough light entering through the lens for the focus circuitry to work, detect contrast.

The lens will not auto focus since there is no focus motor within the lens and your camera does not have the in camera focus motor and screw head to turn the lens's screw driver head focus link, but you can manually focus the lens and the viewfinder's focus indicator will indicate when it thinks proper focus has been attained.

With the AI and Non-AI lenses the photographer had to manually turn the focus ring to set the desired focus.

With the original Nikon F, 1959 - 1962, one needed to use a external light meter and set the camera's f stop, shutter speed and focus prior to taking an image and then manually advance the film and wind the shutter spring with the film advance lever. One never needed to charge or replace a batter on that model.

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A general, generic topicUsing AI lenses on D5000 [View all] , BobCole19 , Sun 20-Sep-09 01:24 PM
Subject Author Message Date ID
Reply message RE: Using AI lenses on D5000 gkaiseril Gold Member
20th Sep 2009
Reply message RE: Using AI lenses on D5000 MEMcD Moderator In depth knowledge in various areas
21st Sep 2009

Forums Lobby MASTER YOUR NIKON CAMERA Nikon D5000/D3000 series (Public) topic #613 Previous topic | Next topic