Raffstore - which slat?

Can you please take a picture of a blackout curtain?

Can't right now; I'm in Malle

With a venetian blind, you will get significantly more light in than with this sOnro.

With a venetian blind, you will definitely get significantly more light in than with this sOnro.

Do you also have S_Onro installed at your home?

I see the picture 3 posts before.

You cannot use an image to represent how strong a lighting is in a room at all.
A camera does not have brightness perception like a human.
It only knows properly exposed, or over/under. But this does not correspond to the actual brightness conditions at all.

Or have you ever seen a sunny winter picture where the snow blinded you? Same thing. The camera compensates for that.