On 16 Mar 2005 at 9:16, Niko Koskela wrote: > I have disassembled a SMC-Takumar 1:1.4 50mm for deep cleaning. When > putting it together i repeatedly end up with the same problem. The > aperture ring turns normally, but turning the aperture ring from f11 to > f16 doesn�t have any effect on the aperture. I have not been able to > find a way to correct this. "Googling" for this problem only found me a > couple of referrals to "aperture calibration", but not any instructions > to do it. Could anyone help me ?
I don't know about this particular lens but if you removed the aperture mech from the lens body for immersion cleaning then you need to make sure that it was returned and secured in precisely the same position. If the aperture mech is rotated to a different point then the aperture may not fully close or fully open. If you didn't mark the position during disassembly then you may have to experiment in order to determine the correct position, unfortunately this requires a tortuous loop of assembly, testing and disassembly :-( Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
