Help: With 6x7 55mm 4.0 lens

[rollsman44]

  I just purchased this lens and the Pentax adaptor for my 645D. The lens and adaptor are in Excellent condition. I can't figure out 2 things with this lens
  1-  On the lens is a auto. Manual ring and I tried to move it to the Right towards the auto side, It will move when I push it but comes back to the Manual side
   How does this lens work?  I know its Manual Focus.
   2- I dont se an f stop ( aperture number in the Top LCD. I move the aperture ring but NO number shows up showing me my F stop settings.
         Thank you,  Dennis

[TimoK]

   2- I dont se an f stop ( aperture number in the Top LCD. I move the aperture ring but NO number shows up showing me my F stop settings.
         Thank you,  Dennis

There is no electronics in the lens. So I don't believe you could get any F-numbers in Lcd or in exif data.
You can see F stop in aperture ring. You only have to remember it or write it down.

[rollsman44]

There is no electronics in the lens. So I don't believe you could get any F-numbers in Lcd or in exif data.
You can see F stop in aperture ring. You only have to remember it or write it down.

   Thank you . I see how it works now.