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<blockquote data-quote="aroy" data-source="post: 348374" data-attributes="member: 16090">For the D3xxx series all non CPU lenses are clubbed together in the second table. As far as I can make out the difference between AI and non AI lenses is the mechanical linkages used to detect the maximum aperture of the lense, and in case of AIS lens control it.<a href="https://support.nikonusa.com/app/answers/detail/a_id/5366/~/what-is-the-difference-between-an-ai-lens,-an-ai-s-lens,-and-non-ai-lens%3F" target="_blank">https://support.nikonusa.com/app/answers/detail/a_id/5366/~/what-is-the-difference-between-an-ai-lens,-an-ai-s-lens,-and-non-ai-lens?</a>As the D3xxx series can not even meter with the non CPU lenses, detecting and controlling the aperture is not even considered. That is why Nikon has clubbed all non CPU lenses together for D3xxx lens compatibility.In my opinion Nikon could have provided metering to the D3xxx series if it allowed input of maximum aperture of the lense. I have checked - when any lense with &quot;automatic aperture&quot; is mounted, the aperture opens up fully; irrespective of where the aperture ring is set; and closes when the shot is taken. Which means that if the maximum aperture is known then the body can meter.</blockquote>

[QUOTE="aroy, post: 348374, member: 16090"] For the D3xxx series all non CPU lenses are clubbed together in the second table. As far as I can make out the difference between AI and non AI lenses is the mechanical linkages used to detect the maximum aperture of the lense, and in case of AIS lens control it. [url]https://support.nikonusa.com/app/answers/detail/a_id/5366/~/what-is-the-difference-between-an-ai-lens,-an-ai-s-lens,-and-non-ai-lens%3F[/url] As the D3xxx series can not even meter with the non CPU lenses, detecting and controlling the aperture is not even considered. That is why Nikon has clubbed all non CPU lenses together for D3xxx lens compatibility. In my opinion Nikon could have provided metering to the D3xxx series if it allowed input of maximum aperture of the lense. I have checked - when any lense with "automatic aperture" is mounted, the aperture opens up fully; irrespective of where the aperture ring is set; and closes when the shot is taken. Which means that if the maximum aperture is known then the body can meter. [/QUOTE]

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