Ideas

Desperate efforts all day long yesterday utilizing AD-Aware program could eliminate all the strange ill program by external approach resulting PC recovery like new one.
Dust mail sent unintentionally was one of the way to be invaded. I felt the necessity of periodical treatment on PC.
Also I have made up my mind to change official account into another one.

As mentioned the day before yesterday, old Minolta MD Rokkor SLR lenses might be applicable on Canon EOS Digital Body, of course internal helicoid anterior-posterior adjustment to establish infinity position is indispensable for 50/1,4 Rokkor, very precise adjustment is performed at lens element mount portion and more adjustment would be done by shifting the fit of helicoid groove, not so difficult task if the initial position was recorded prior to the trials.
Rokkor lenses are my favorite ones that could supply acceptable pictures with no artificial enhancing trick.