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<blockquote data-quote="STM" data-source="post: 124039" data-attributes="member: 12827">The G series Nikkors are somewhat of a down graded version of the D lenses, presumtively to make them more affordable. Kind of like the Series E lenses during the '70's through early 90's. I am not sure if the optical formulas are the same for the G and D or not.The G's have no aperture ring on the lens so aperture control can be done only from the camera it self, meanign that some camera bodies cannot accept them. There are some changes in lenses structure and building material as well, like the lens mount in the G series is made from plastic instead of metal, something that still has be shaking my head in both bewilderment and disgust. I am sure there may be other differences too and people here who use autofocus lenses I am sure can point them out.Has I understand there is no significant change in the material and quality of the glass it self.</blockquote>

[QUOTE="STM, post: 124039, member: 12827"] The G series Nikkors are somewhat of a down graded version of the D lenses, presumtively to make them more affordable. Kind of like the Series E lenses during the '70's through early 90's. I am not sure if the optical formulas are the same for the G and D or not. The G's have no aperture ring on the lens so aperture control can be done only from the camera it self, meanign that some camera bodies cannot accept them. There are some changes in lenses structure and building material as well, like the lens mount in the G series is made from plastic instead of metal, something that still has be shaking my head in both bewilderment and disgust. I am sure there may be other differences too and people here who use autofocus lenses I am sure can point them out. Has I understand there is no significant change in the material and quality of the glass it self. [/QUOTE]

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