Attaching the lens

Set the aperture on the lens that is to be attached to "5.6".
Then, coincide the black colored dot on the lens with the one on the camera body.
After that, turn the lens counterclockwise till it clicks and stops.

Here, the aperture ring has to be rotated to send the aperture information to the viewfinder.
Turn the aperture ring: 1. counterclockwise till it stops, and then 2. clockwise till it stops.