hey guys I need your help !!! Forced to lock aperture ring

[Maitha Mazrouei]

I just bought the Nikkor 50mm 1.8 lens for the Nikon D40. When trying to use the aperture ring the camera tells me:
"Lock lens aperture ring at minimum aperture (largets f/-number)."

I looked in the manual and it says the same thing. Anyone know if there's a way to use the aperture ring on the lens as opposed to the one in the camera? And if not, does anyone know why?

 

[Sw1tchFX]

You can't use the aperture ring like on the manual bodies and the N2020, N8008's and bodies like that. I don't know why, but it's not that big of a deal anyway. The dials are much better.

 

[Garbz]

The problem is the cameras don't differentiate between the electronic and mechanical controls. If the lens has a chip it will want to control it electronically. As far as I know there is no way to override this. Lenses without a chip (lenses without D or G designators) will require you to specify to the camera what lens is mounted so that it can metre correctly, and then use the aperture ring.