Posted: Mon May 04, 2020 3:35 pm Post subject: |
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kypfer wrote:
kds315* wrote: |
hmm, if you find a solution, I'd be interested, too! |
No response from anyone else, unfortunately, but I have found, by trial and error, that simply removing the rear element (with a lens spanner) allows sufficient access to the diaphragm to allow a swab to be used with some naptha on the blades themselves and, possibly more importantly, on the edge of the rotating plate that holds the blades. In both instances this plate is held in place by a large circlip, which I didn't remove, but would appear to be of sufficiently close tolerance to bind on the aperture plate if not totally clean
Other than that, I found no more to be necessary to enable a reliable manual aperture. The auto-aperture pin and linkage does seem to have it's own problems, both lenses being very similar in construction internally, but I didn't bother to go further as the lenses have an A/M switch, which is what I'll be using
Good luck |