I've never really been able to spot a sharp lens through the viewfinder, only by taking a magnifier to the negatives afterwards.
This is important information for me.Thank you.

It is a sharp lens, I know I checked it

Viewwfinders aren't that sharp particularly when they don't have dioptre adjustment to adjust for eyesight.
Thank you Ian , this is my first japanese and slr in 20 years. I had been missed to use telephoto. I am eating film with it and I am using with slow speeds because I ve been quite lazy to use my brain and I left everything to online photo editors.
I am listening calm radio and I feel sleepless and tired for last 3 days. What a torture and I am going to listen Iron Maiden after all

Thank you all ,