How to adjust the range of the binoculars? (Metro Exodus)

SLGallardo
RT should press again, then increase.

SLGallardo
The left and right mouse button!

SLGallardo
Press the left mouse button - increase, right decrease. Only 3 zoom levels.

Double click while viewing through the binoculars think makes a mark on the map?

Thank you all for the answers. Apparently I I must have missed the moment when the game gave instructions on its use.

leninV
I understand no. Only when you zoom on an interesting object, it sounds a click, and you can double-click the LMB that would make it closer, and it is marked on the map with the icon issue.

But what I don't understand how to adjust the magnification of the optical sight? In the description it says the type of Sight with x4 magnification and a VARIABLE focal length. Whether the jamb of the description, or what

And I do not understand how to mark locations. Tooltip wrote LMK how you hear a click, but it only increases the zoom, and nothing happens, the card remains blank.