didn't you see my examples? new and old Diana?
I could try your experiment (I have to wait a little as the new Diana is on a trip to Vietnam... on loan).

The results will of course be dependant of which old Diana one is using. I think they differ more from example to example than the new ones...

I have an old friend, who lives in the states - she just sent me an image showing her 128(!!) Diana cameras...... They all differ I think..