spot in viewfinder

When looking through the viewfinder, I can see a very faint clear circle at the centre of the view (around the central AF square). It completely fills the central AF square. It is only visible against a light background, and does not affect the picture. It also doesn't appear when looking through live view. I have taken the lens off, and looked through the viewfinder without the lens and I can still see this circle. Is this something to be concerned about? Is it normal ?

i have attached some pictures

I believe that some one posted that is the location the camera sees through the mirror to auto focus as the mirror blocks the sensor when down.

Welcome to the forum @anzar. No worries that I know of with the center like that.

anzar said:

Is it normal?

Click to expand...

Yes, it is.
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Totally normal... it's from the focusing screen.