Hmmm , 36mm tube has minimized it ...
As long as the light is not to strong , it seems to work ..
But thats still annoying .. I wonder if it does it with all cameras , or if its just my K10 ?
I will have to try a K20 and see ..
Ok I took a series of photos , and for the most part the Macro tube works ( 36mm ) ...
Unfortunately when you push the zoom , and the light the blue dot appears ...
What a shame , I dont think this lens is going to make it as a working lens ...
https://www.pentaxforums.com/forums/177-macro-photography/272807-more-tamron-90-sp-bbar.html Link to the photos ...
It looks like the lens really was a legend , in the film days ..
Last edited by old4570; 09-11-2014 at 11:18 PM.