"A" setting with Adaptall ll lenses
link
I have the 52B and 18F with PKA adapter and seems to work fine on lens AE position and Av on the camera. The camera indicates f2.4/2.5 on the widest setting.
Not found any issue with the order of assembly as long as you check operation of the aperture before connecting to the camera.
Hope this helps
Bill
Do not know if this helps but i have an sp90mm 72b with a PKA adaptor that works just fine with a kenko tele converter in AE setting.
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
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6869 posts
15 years
Co. Durham UK
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/