AF confirm adapter for Tamron Adaptall 2 mount AD2 lens to Canon EOS EF mount - 60D 550D 600D 7D 70D

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This is the AF confirm chipped lens adapter ring with built in circuit board for Tamron Adaptall 2 mount lens on your Canon EOS EF mount camera, saving you the expense of a costly and irreversible conversion. Focal length and aperture values are fixed and not programmable, but value can be controlled from F/1.4 to F/4.0 for exposure control.It is not suitable for several full frame 5D series cameras because of depth of lens mount. Please contact us on compatibility of camera model before purchase. Allows focus infinity. Show more