Go on ,you will find everything you want to know.M49 Lens to AI for Nikon F mount adapter ring with plate D70s D3100 D100 D7000
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<br />It comes with the plate that will pull down the apeture pin
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<br />The ring allows M49 lenses (Carl Zeiss, Pentax, Praktica, Mamiya) to be used on Nikon F mount cameras (film SLR and digital SLR)
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<br />Main Features:
<br />It is possible to use Macro rings and other accessories
<br />Brand new, never used
<br />Made of metal - Anodized Aluminium
<br />Colour : Black
<br />Only for MACRO photography; unable to focus infinity
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<br />Notice: Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter. In this case "stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body. You can shoot with manual mode or aperture priority mode with camera body.
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<br />Suitable For:
<br />Nikon DSLR and Film SLR and
<br />M49 lenses (Carl Zeiss, Mamiya, Pentax, Praktica, etc.)
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<br />Package Include:
<br />1x Lens mount adapter
<br />Thanks for your patience,have a good experience!