I have a SMC-M 28mm F3.5 that had the same problem, but mine was more
severe than what you describe.  It cost $45 to fix, well worth it :)

Todd

At 02:10 PM 1/23/01 -0600, you wrote:
>
>
>> I recently bought a K28mm f/3.5. However, the diaphragm sticks a little
>> just enough to get overexposure. I can use the lens with my MX by using
>> the DOF preview, but that I forget it all of the time. I read that it is
>> possible to clean the diaphragm. Anyone have the procedure and what tools
>> I need for this lens?
>
>
>I think what you need is called a "camera repairman." <s>
>
>--Mike
>
>
>
>
>-
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