In Av mode , diaph stays in position in my Contax AX

[emmanuel_b1]

<p>Hi, I own an AX body with 1.7 50mm planar and 2.8 35mm distagon.<br>

I realized this afternoon in Av mode in both lenses, that aperture remains on minimum , not depending on light conditions.<br>

I had to push on depth field button to get normal , and in the same time , I feel somthing moving under the aperture ring.<br>

Again when I come back to the smallest diaph.<br>

What tuning do I have to do? Thank you.</p>

[chuck_foreman1]

What kind of results are you getting..that should tell you whether somethings not right!

[emmanuel_b1]

<p>No problem in P and Tv modes.<br /> Problem is in Av mode only.<br /> When I close diaphragm at minimum , it remains at this position even by turning the ring at higher aperture.I have to push the depth of field button to "unlock" the diaphragm;this works every time , and in the same time I feel something unlocking under the ring.</p>

[emmanuel_b1]

<p>After analysis , I found it's not the depth of field button.<br /> This is the ring inside the body for diaph information which is hard to handle and sometimes remains in bad position.<br /> I now have to find a solution to make it more fluid.<br /> <img src="http://img25.imageshack.us/img25/2434/baguek.jpg" border="0" alt="" /></p>

[emmanuel_b1]

<p>I add fluiden (teflon) around the ring , and it works.</p>